Sales Tax Mistakes NJ & PA Businesses Commonly Make: A Compliance Guide

Sales tax looks simple when you reduce it to one transaction.

Sell a taxable product.

Calculate tax.

Collect it from the customer.

Send it to the state.

But that is not where most business sales-tax problems begin.

The real questions are:

Was the transaction taxable?

Which state’s rules apply?

What rate should have been charged?

Did the business have nexus?

Was an exemption certificate valid?

Did a marketplace already collect the tax?

Was use tax due on a business purchase?

Was the return filed even when there were no taxable sales?

For New Jersey and Pennsylvania businesses, getting any of these questions wrong can create a discrepancy that repeats across hundreds or thousands of transactions.

Consider a business that undercollects tax by only:

$2 per transaction

Across:

5,000 transactions

that becomes:

$10,000 of tax that was not collected from customers.

If the business later becomes responsible for that tax, the money may need to come from the business rather than from the customers who originally made the purchases.

That is why sales tax compliance should be treated as an accounting process rather than simply a checkout setting.

At KP Accounting, we help businesses build stronger accounting, bookkeeping, and tax processes so that sales, taxable transactions, collected tax, marketplace activity, and amounts reported to tax authorities can be properly reconciled.

This guide explains common sales tax NJ and Pennsylvania sales tax mistakes, including rates, nexus, exemptions, use tax, ecommerce, marketplace sales, filing errors, and the accounting controls businesses can use to reduce compliance problems.

What Sales Tax Mistakes Do NJ and PA Businesses Commonly Make?

Common New Jersey and Pennsylvania sales tax mistakes include charging the wrong rate, assuming every product or service is taxable or exempt, failing to register after creating nexus, mishandling marketplace sales, accepting incomplete exemption certificates, ignoring use tax, reporting gross sales incorrectly, missing zero-dollar returns, and failing to reconcile sales tax collected with filed returns.

Not Sure Whether Your Sales Tax Records Are Correct?

A sales tax problem is easier to address when you find the discrepancy before a state notice or examination does.

KP Accounting can help businesses reconcile sales records, bookkeeping, taxable sales, sales tax liabilities, and filed returns.

Review My Sales Tax Records

What Is the Sales Tax Rate in New Jersey?

New Jersey’s general Sales Tax rate is 6.625%. The state applies Sales Tax to most retail sales of tangible personal property, specified digital products, and certain services unless a transaction is specifically exempt or excluded under New Jersey law.

New Jersey is relatively straightforward from a rate perspective because it generally has a single statewide Sales Tax rate.

New Jersey General Rate

6.625%

Simple Example

Taxable sale:

$1,000

Sales Tax:

$1,000 × 6.625% = $66.25

Customer total:

$1,066.25

However, knowing the rate does not answer the more important compliance question:

Is the transaction taxable in the first place?

A business can calculate 6.625% perfectly and still have a compliance problem if it applied tax to the wrong transaction or failed to tax one that was taxable.

What Is the Sales Tax Rate in Pennsylvania?

Pennsylvania’s general state Sales Tax rate is 6%. Applicable local Sales Tax can increase the combined rate to 7% for Allegheny County and 8% for Philadelphia.

Pennsylvania Rates

Example

A taxable $1,000 transaction subject only to Pennsylvania’s state rate:

$1,000 × 6% = $60

Total:

$1,060

A taxable $1,000 sale subject to Philadelphia’s additional 2% local Sales Tax:

$1,000 × 8% = $80

Total:

$1,080

This geographic difference makes Pennsylvania sales tax configuration more complicated than simply setting:

“PA = 6%”

inside accounting, ecommerce, or POS software.

Important 2026 Pennsylvania Local Sales Tax Change

Pennsylvania enacted legislation in 2026 requiring vendors already obligated to collect Pennsylvania’s 6% Sales Tax to collect applicable Philadelphia and Allegheny County local Sales Tax based on where taxable products or services are delivered. The Pennsylvania Department of Revenue says enforcement of this destination-based local rule begins October 1, 2026.

This is particularly important for:

• Ecommerce businesses
• Delivery businesses
• Remote sellers
• Businesses shipping throughout Pennsylvania
• Businesses with customers in Philadelphia
• Businesses with customers in Allegheny County

Historically, Pennsylvania’s local Sales Tax generally focused on the point of sale.

The 2026 change moves local Sales Tax treatment toward:

Point of destination

In other words:

Where is the taxable product or service delivered?

Example

Suppose a Pennsylvania retailer located outside Philadelphia sells taxable property to a customer and delivers it to an address in Philadelphia.

Under the new destination-based local rules, the Philadelphia local Sales Tax may need to be collected in addition to Pennsylvania’s 6% state tax.

Businesses should therefore review:

• POS settings
• Ecommerce tax settings
• Customer addresses
• Shipping destinations
• Accounting mappings
• Sales Tax reports

before enforcement begins.

Mistake #1: Assuming Every Sale Is Taxable

Not every transaction in New Jersey or Pennsylvania is automatically subject to Sales Tax. Taxability depends on what is being sold, how it is sold, where it is delivered or used, and whether a statutory exemption or exclusion applies.

Businesses sometimes take the conservative approach:

“We’ll just charge Sales Tax on everything.”

That can also create problems.

Overcollection can produce:

• Incorrect customer invoices
• Customer disputes
• Refund requests
• Incorrect tax returns
• Accounting complications

The better process is to classify each major revenue stream.

Create a matrix like this:

Do not determine taxability solely from how your accounting software labels the item.

Mistake #2: Assuming Every Service Is Exempt

A common small-business misconception is that Sales Tax applies only to physical products. Both New Jersey and Pennsylvania tax certain services, so service businesses should review the specific tax treatment of what they provide rather than assuming services are automatically exempt.

This can affect businesses providing certain:

• Repair services
• Maintenance services
• Digital services/products
• Business services
• Property-related services
• Other specifically taxable activities

For example, New Jersey generally taxes certain services involving the maintenance, servicing, or repairing of real property, while its rules distinguish certain exempt capital improvements.

Pennsylvania also imposes Sales Tax on specified services in addition to tangible personal property and digital products.

Better practice

Before creating an invoice item called:

“Service – Non-Taxable”

confirm whether that particular service is actually exempt under the applicable state’s rules.

Mistake #3: Charging the Wrong State or Local Rate

Businesses can collect the wrong amount of Sales Tax when their POS, invoicing, or ecommerce systems use outdated rates or incorrect sourcing information. New Jersey generally uses a 6.625% statewide rate, while Pennsylvania generally uses 6%, with additional local tax applying to Philadelphia and Allegheny County transactions.

This problem commonly occurs when businesses:

• Manually calculate tax
• Use old POS settings
• Copy prior invoices
• Use incorrect customer addresses
• Fail to update ecommerce software
• Do not distinguish Philadelphia or Allegheny County transactions

A $1 mistake can scale

Suppose a business undercollects Sales Tax by:

$1.50

on:

8,000 orders

Potential undercollection:

$12,000

Small configuration mistakes become material when transaction volume increases.

Mistake #4: Not Understanding Sales Tax Nexus

Sales tax nexus is the connection between a business and a state that can create a Sales Tax collection obligation. Nexus can arise from physical activity and, for remote sellers, from exceeding applicable economic thresholds.

Years ago, many online sellers assumed:

“We don’t have an office there, so we don’t need to collect Sales Tax.”

That is no longer a safe assumption.

Businesses need to monitor both:

Physical Nexus

Potential factors can include:

• Office
• Store
• Warehouse
• Employees
• Inventory
• Other in-state activities

Economic Nexus

Sales volume alone can create a collection obligation for qualifying remote sellers.

This matters for:

• Shopify stores
• Amazon sellers
• SaaS/digital businesses where taxable
• Manufacturers
• Wholesalers
• Multi-state retailers
• Service businesses

New Jersey Economic Nexus Rules

A remote seller can trigger New Jersey Sales Tax collection requirements when its qualifying New Jersey activity exceeds $100,000 in gross revenue during the current or prior calendar year or reaches 200 or more separate qualifying transactions during the current or prior calendar year.

This is important because New Jersey uses:

Revenue OR transaction count

for its remote-seller threshold.

NJ Threshold

A qualifying remote seller may establish economic nexus if:

New Jersey qualifying gross revenue > $100,000

OR

200+ qualifying separate transactions

during the applicable current or prior calendar year.

Common mistake

A business checks only revenue:

“We only sold $85,000 into New Jersey.”

But if it completed 300 qualifying transactions, the transaction threshold can still matter.

Remote sellers should therefore track:

• Dollar sales by state
• Transaction count by state

not just total company revenue.

Pennsylvania Economic Nexus Rules

Pennsylvania’s economic nexus standard generally requires remote sellers with more than $100,000 in annual Pennsylvania gross sales to register, collect, and remit Pennsylvania Sales Tax. Unlike New Jersey’s remote-seller rule, Pennsylvania’s current economic-presence test uses a sales threshold rather than a transaction-count threshold.

PA Threshold

Generally:

Pennsylvania annual gross sales > $100,000

for qualifying remote sellers.

Important distinction

New Jersey:

$100,000 threshold or 200 transactions.

Pennsylvania:

$100,000 sales threshold; no equivalent transaction-count test under the current economic-nexus rule.

Businesses operating in both states should not configure their nexus monitoring identically.

Mistake #5: Looking at Only Taxable Sales When Monitoring Nexus

Businesses should follow each state’s rules for determining which sales count toward its economic nexus threshold rather than assuming only taxable sales count. New Jersey and Pennsylvania guidance can require broader gross-sales calculations.

This is an easy ecommerce mistake.

Suppose a business sells:

$70,000 taxable products

plus:

$45,000 nontaxable products

into a state.

Looking only at taxable sales produces:

$70,000

Looking at qualifying gross sales produces:

$115,000

That difference can affect nexus.

Businesses should therefore create a state-by-state nexus report rather than relying solely on:

Sales Tax Collected

from their bookkeeping software.

Mistake #6: Mishandling Marketplace Sales

Marketplace facilitators such as qualifying online marketplaces may be responsible for collecting and remitting Sales Tax on marketplace transactions. Sellers still need to understand how marketplace sales affect registration, nexus calculations, direct sales, bookkeeping, and Sales Tax returns.

Suppose your business sells through:

• Amazon
• Walmart Marketplace
• Your Shopify store

The marketplace may collect tax on marketplace transactions.

But that does not automatically mean:

“We don’t have to think about Sales Tax anymore.”

You still need to determine:

• Whether marketplace sales count toward nexus
• Whether registration is required
• Whether marketplace sales appear on state returns
• Whether direct website sales require collection
• Whether tax collected by marketplaces has been excluded from your payable liability

Major accounting mistake

Recording marketplace-collected Sales Tax as:

Sales Tax Payable by Your Business

can overstate your liability if the marketplace – not your company – is responsible for remitting it.

Your books should distinguish:

Seller-collected tax

from:

Marketplace-facilitator-collected tax

Mistake #7: Collecting Sales Tax Before Registering

Businesses generally should complete required Sales Tax registration before collecting tax from customers. Sales Tax collected from customers creates a remittance obligation and should not be treated as ordinary business revenue.

Do not simply add a line to invoices saying:

Sales Tax

without first confirming:

• Registration requirements
• Correct tax rate
• Taxability
• Filing frequency
• Remittance procedure

Once collected, Sales Tax should normally be tracked as a liability rather than income.

Accounting concept

Suppose you sell:

Product:

$1,000

Sales Tax:

$66.25

Customer pays:

$1,066.25

Your revenue generally is:

$1,000

Sales Tax liability:

$66.25

Do not record:

Revenue = $1,066.25

That can distort both financial statements and Sales Tax reconciliation.

Mistake #8: Treating Collected Sales Tax as Business Cash

Sales Tax collected from customers should be tracked as a liability owed to the taxing authority, not as operating revenue available for the business to spend.

This is one of the most important bookkeeping principles in Sales Tax compliance.

Your bank account may show:

$50,000

But suppose:

$7,000

represents collected taxes and other liabilities.

Your business does not necessarily have $50,000 of unrestricted operating cash.

Better bookkeeping

Maintain a dedicated liability account such as:

Sales Tax Payable

Then reconcile:

Beginning Sales Tax Payable

• Tax Collected
• − Tax Remitted
• ± Adjustments

= Ending Sales Tax Payable

If the accounting balance does not agree with the return, investigate the difference.

Mistake #9: Failing to Keep Valid Exemption and Resale Certificates

Businesses making tax-exempt sales should retain the exemption or resale documentation required by the applicable state. Simply writing “resale” or “tax exempt” on an invoice is not a substitute for appropriate documentation.

A customer may say:

“We’re exempt. Don’t charge us tax.”

That statement alone should not become your compliance process.

Maintain applicable:

• Resale certificates
• Exemption certificates
• Supporting customer information

And review whether:

• The form is complete.
• The certificate applies to the transaction.
• Required information is present.
• Documentation is retained.

Why this matters

During a Sales Tax examination, the business may need to substantiate why tax was not collected.

Without adequate documentation, an allegedly exempt transaction can become an assessment issue.

Mistake #10: Ignoring Use Tax

Use tax generally applies when a business purchases taxable property or services for use in a state and the seller did not collect the required Sales Tax. Businesses should review untaxed purchases rather than assuming “no Sales Tax charged” means “no tax owed.”

This is one of the most frequently overlooked areas of sales tax compliance.

Example

A Pennsylvania business buys:

$10,000 of taxable equipment

from an out-of-state vendor.

Vendor collects:

$0 Pennsylvania Sales Tax

That does not necessarily mean the purchase was tax-free.

If Pennsylvania use tax applies at 6%:

$10,000 × 6% = $600

may need to be reported and paid.

Applicable local use tax can also matter for Philadelphia and Allegheny County.

Purchases to review

• Online equipment
• Computers
• Office furniture
• Supplies
• Software/digital purchases where taxable
• Out-of-state services where taxable
• Items purchased in a state with lower/no tax and brought into NJ or PA

A good monthly close includes a use-tax review.

Mistake #11: Not Filing Because You Had Zero Sales

Once registered, businesses may still have a filing requirement for periods with no taxable transactions. For example, New Jersey instructs registered Sales Tax filers to submit quarterly returns even when no tax is due and no sales were made.

This catches seasonal and temporarily inactive businesses.

A business owner thinks:

“We didn’t sell anything this quarter, so there is nothing to file.”

But the state may still be expecting a return.

Failure to submit required zero returns can create:

• Delinquency notices
• Filing issues
• Estimated assessments
• Account problems

Better approach

Your compliance calendar should track:

Returns required

not merely:

Tax payments required.

Mistake #12: Reporting Deposits Instead of Sales

Bank deposits are not automatically the same as gross sales. Deposits may include loans, owner contributions, transfers, refunds, or other non-sales activity, while some sales may be deposited net of processor fees.

Consider:

Bank deposits:

$500,000

That does not automatically mean:

Gross Sales = $500,000

The account may contain:

• $450,000 customer receipts
• $25,000 owner contribution
• $15,000 loan proceeds
• $10,000 transfers

Alternatively, a payment processor might show:

Gross customer sales:

$500,000

Processing fees:

$15,000

Net bank deposits:

$485,000

If you report only bank deposits, you could understate gross sales.

Sales Tax reconciliation should therefore start with actual transaction data – not just bank statements.

Mistake #13: Failing to Reconcile POS, Ecommerce, Books, and Tax Returns

Sales Tax compliance should reconcile transaction-level sales data with accounting records and filed Sales Tax returns. Differences among the POS system, ecommerce platform, payment processors, general ledger, and state returns should be identified and explained.

A strong reconciliation follows:

POS / Ecommerce Gross Sales

↓

Accounting Gross Sales

↓

Less Valid Exempt/Nontaxable Sales

↓

Taxable Sales

↓

Applicable Tax Rate

↓

Expected Sales Tax

↓

Sales Tax Collected

↓

Sales Tax Return

↓

Sales Tax Payment

Each stage should be explainable.

Warning signs

Investigate when:

• Shopify says $800,000 sales.
• QuickBooks says $750,000.
• Sales Tax returns report $690,000.
• Bank deposits equal $720,000.

The numbers do not necessarily need to be identical.

But the differences need to reconcile.

Mistake #14: Double-Counting Marketplace Sales Tax

Businesses selling through marketplaces and direct channels should distinguish tax collected by the marketplace from tax the business itself collects. Combining both into one Sales Tax liability account without proper mapping can result in incorrect bookkeeping and potentially incorrect return preparation.

Example

Amazon transaction:

Sale:

$100

Tax collected by marketplace:

$6.25

Your accounting should not automatically create:

$6.25 Sales Tax Payable by Seller

if the marketplace facilitator is legally responsible for remitting that tax.

Meanwhile, your direct website transaction may create a seller-collected tax liability.

Better accounting structure

Consider tracking:

• Direct taxable sales
• Marketplace sales
• Seller-collected Sales Tax
• Marketplace-collected Sales Tax
• Exempt sales

That gives your accountant cleaner data for return preparation.

Mistake #15: Forgetting Sales Tax When Expanding Into Another State

Opening a location, hiring workers, storing inventory, or reaching economic sales thresholds in another state can create new Sales Tax obligations. Businesses should perform a nexus review before or during expansion rather than waiting until a state sends a notice.

Expansion triggers can include:

• New office
• New retail location
• New warehouse
• Employees in another state
• Inventory stored by a fulfillment provider
• Rapid ecommerce growth
• Acquisition of another business

Example

A New Jersey ecommerce company begins generating substantial Pennsylvania sales.

The company should not simply think:

“We’re registered in NJ, so we’re covered.”

Sales Tax registration is state-specific.

NJ registration does not automatically satisfy Pennsylvania obligations.

New Jersey vs. Pennsylvania Sales Tax

New Jersey and Pennsylvania differ in general Sales Tax rates, local tax structure, economic nexus rules, and the taxability of specific products and services. Businesses operating in both states should maintain separate state-specific compliance rules.

Never assume:

NJ rule = PA rule

even though the states border each other.

Ecommerce Sales Tax Mistakes in NJ and PA

Ecommerce businesses commonly make Sales Tax mistakes by relying entirely on platform settings, failing to monitor nexus, misunderstanding marketplace facilitator rules, applying incorrect customer locations, and failing to reconcile platform reports with accounting records and state filings.

Suppose your business sells through:

Amazon + Shopify + Walmart

You should know:

By State

• Gross sales
• Taxable sales
• Exempt sales
• Transaction count where relevant

By Channel

• Marketplace sales
• Direct sales

By Tax Collector

• Tax collected by marketplace
• Tax collected by your company

By Jurisdiction

• Destination
• Applicable rate
• Registration status

Your ecommerce platform is an important tool.

It should not be your only compliance control.

Sales Tax Mistakes Service Businesses Make

Service businesses often make errors by assuming all services are nontaxable, failing to separate taxable products from services, incorrectly treating bundled transactions, or applying one state’s service-tax rules to another state.

Consider an invoice containing:

Equipment: $4,000

Installation: $1,000

Maintenance: $500

The correct Sales Tax treatment cannot necessarily be determined simply by labeling two items “services.”

Taxability can depend on:

• Nature of the service
• Property involved
• Whether the charge is part of a taxable sale
• State-specific law
• Documentation
• Customer exemption status

Service businesses should create a written taxability matrix for recurring invoice categories.

Sales Tax Mistakes Contractors Can Make

Contractors need to distinguish taxable repairs or maintenance from qualifying capital improvements and understand how each state treats materials, labor, and exemption documentation. New Jersey, for example, has specific rules distinguishing taxable repair and maintenance work from certain exempt capital improvements.

A contractor may assume:

“Construction isn’t subject to Sales Tax.”

That is too broad.

Different treatment can apply to:

• Repair
• Maintenance
• Installation
• Capital improvement
• Materials
• Customer-provided exemption documentation

For New Jersey capital improvements, appropriate documentation such as Form ST-8, Certificate of Exempt Capital Improvement, can be important where the exemption applies.

Contractors should not determine Sales Tax treatment solely from the size or cost of the project.

What Happens During a Sales Tax Audit?

A state Sales Tax examination may compare filed returns with accounting records, federal income-tax returns, bank deposits, invoices, exemption certificates, purchase records, POS data, and other financial information to determine whether taxable sales and use-tax obligations were reported correctly.

Records that may be reviewed include:

• Sales Tax returns
• Federal returns
• General ledger
• Profit and loss statements
• Bank statements
• Sales journals
• POS reports
• Ecommerce reports
• Customer invoices
• Exemption certificates
• Purchase invoices
• Use-tax records

The examiner may attempt to answer:

Did the business report all sales?

Were exempt sales actually exempt?

Was the correct tax collected?

Was use tax paid on taxable purchases?

This is why Sales Tax compliance begins with bookkeeping.

How to Perform a Sales Tax Reconciliation

A Sales Tax reconciliation compares sales recorded in accounting with transaction data, taxable and exempt sales, tax collected, tax reported, and payments made to the state. Businesses should perform this reconciliation regularly rather than waiting for year-end.

Use this workflow.

Step 1: Reconcile Gross Sales

Compare:

• POS
• Ecommerce
• Invoices
• General ledger

Step 2: Identify Marketplace Sales

Separate facilitator-collected transactions.

Step 3: Identify Exempt Sales

Verify supporting certificates.

Step 4: Calculate Taxable Sales

Formula:

Gross Sales − Valid Exempt/Nontaxable Sales and Other Appropriate Adjustments = Taxable Sales

Step 5: Review Tax Rates

Confirm applicable jurisdiction and rate.

Step 6: Calculate Expected Tax

Taxable Sales × Applicable Rate = Expected Sales Tax

For multiple jurisdictions, calculate separately.

Step 7: Compare With Tax Collected

Investigate:

Expected Tax ≠ Actual Tax Collected

Step 8: Compare With Filed Returns

Confirm taxable sales and tax reported.

Step 9: Compare Payments

Verify amounts actually remitted.

Step 10: Reconcile Sales Tax Payable

Formula:

Beginning Liability + Seller-Collected Tax − Remittances ± Adjustments = Ending Liability

Monthly Sales Tax Compliance Checklist

A monthly Sales Tax review should verify nexus, registrations, gross sales, marketplace transactions, taxable sales, exemptions, tax collected, use tax, liability accounts, return deadlines, and state payments.

Sales

• Reconcile gross sales.
• Separate direct and marketplace sales.
• Review refunds.
• Review discounts.
• Review shipping charges where relevant.
• Identify exempt transactions.

Nexus

• Review sales by state.
• Review transaction counts where relevant.
• Review physical presence.
• Review new employees or locations.
• Review inventory locations.

Tax Collection

• Verify NJ rate configuration.
• Verify PA rate configuration.
• Review Philadelphia transactions.
• Review Allegheny County transactions.
• Review ecommerce settings.

Documentation

• Validate exemption certificates.
• Validate resale certificates.
• Retain invoices.
• Retain marketplace reports.

Use Tax

• Review untaxed vendor purchases.
• Review out-of-state purchases.
• Calculate applicable use tax.

Filing

• Confirm filing deadline.
• File required zero returns.
• Reconcile return to books.
• Verify payment.
• Save confirmation.

When Should a Business Get Professional Sales Tax Help?

Professional assistance can be valuable when a business operates in multiple states, exceeds economic nexus thresholds, sells through multiple marketplaces, has uncertain product or service taxability, lacks exemption documentation, has unreconciled Sales Tax liabilities, receives a state notice, or discovers years of filing errors.

Consider professional assistance when:

• You do not know whether you need to register.
• Your company sells in NJ and PA.
• You recently crossed nexus thresholds.
• You sell nationwide.
• You operate an ecommerce business.
• You sell through marketplaces and your own website.
• Your Sales Tax payable account does not reconcile.
• You have missing returns.
• You have not filed zero returns.
• Exemption certificates are missing.
• Use tax has never been reviewed.
• Your POS rate is incorrect.
• You received a Sales Tax notice.
• A state examination has begun.
• Your business is expanding.

The costliest Sales Tax problems often begin as small process errors repeated over time.

Sales Tax Payable Doesn’t Match Your Returns?

That difference should be explainable.

KP Accounting can help reconcile sales, marketplace activity, Sales Tax collected, Sales Tax payable, and amounts reported to state tax authorities.

Fix My Sales Tax Records

How KP Accounting Helps NJ & PA Businesses With Sales Tax Compliance

KP Accounting can help New Jersey and Pennsylvania businesses improve the accounting behind Sales Tax compliance by reviewing sales records, reconciling Sales Tax liabilities, organizing marketplace transactions, identifying use-tax issues, maintaining bookkeeping, and supporting accurate tax reporting.

Sales Tax Bookkeeping

We can help correctly record:

• Gross sales
• Taxable sales
• Exempt sales
• Seller-collected tax
• Marketplace activity
• Sales Tax payable
• Sales Tax remittances

Sales Tax Reconciliation

We can compare:

POS / Ecommerce → Accounting → Taxable Sales → Tax Collected → Return → Payment

Ecommerce Accounting

For multi-channel sellers, we can help separate:

• Amazon
• Shopify
• Walmart
• Other marketplaces
• Direct sales

Use Tax Review

Business purchases can be reviewed for situations where applicable Sales Tax was not collected.

Exemption Documentation

Businesses can establish better processes for organizing and maintaining exemption documentation.

Financial Reporting

Proper Sales Tax bookkeeping prevents collected tax from incorrectly inflating:

• Revenue
• Profit
• Cash-flow assumptions

Notice Support

When a state notice arrives, organized books make it easier to determine:

• What was reported
• What was collected
• What was paid
• Where the discrepancy occurred

KP Accounting serves businesses from offices in:

• Somerville, New Jersey
• Allentown, Pennsylvania
• Walnutport, Pennsylvania

and supports businesses with accounting, bookkeeping, payroll, tax planning, tax returns, budget analysis, and financial reporting needs.

FAQs

Sales Tax Compliance Is an Accounting Process, Not Just a Tax Setting

A business can have sophisticated software and still make Sales Tax mistakes.

Why?

Because software needs correct answers to questions such as:

What do we sell?

Where do we have nexus?

Which transactions are taxable?

Which rate applies?

Who collected the tax?

Do we have exemption documentation?

Did we owe use tax?

Do the books reconcile with the return?

Strong Sales Tax compliance therefore requires:

Correct Rules + Correct Software Configuration + Accurate Bookkeeping + Regular Reconciliation

For businesses operating across New Jersey and Pennsylvania, those rules cannot simply be copied from one state to another.

New Jersey generally applies a 6.625% statewide Sales Tax rate, while Pennsylvania generally imposes 6% state Sales Tax, with additional local tax applicable to Philadelphia and Allegheny County.

Their economic nexus rules also differ.

And Pennsylvania’s 2026 local-tax sourcing change makes location accuracy even more important for businesses delivering taxable products and services into Philadelphia and Allegheny County.

The earlier these issues are identified, the easier they generally are to address.

Need Help Reviewing Your Sales Tax Accounting?

KP Accounting helps New Jersey and Pennsylvania businesses maintain accurate bookkeeping, reconcile Sales Tax liabilities, organize multi-channel sales data, and strengthen tax-compliance processes.

Schedule a Sales Tax Review

Disclaimer

This article provides general educational information and does not constitute individualized sales-tax, legal, nexus, audit, taxability, or financial advice. Sales Tax obligations depend on a business’s products, services, locations, customers, sales channels, physical activities, economic nexus, exemptions, and other facts. New Jersey and Pennsylvania rules, rates, thresholds, filing procedures, and local requirements can change. Businesses should verify current requirements with the appropriate state tax authority or a qualified tax professional before making compliance decisions.