Sales Tax Return Preparation
Period transaction data assembled by state, reconciled to the ledger, and returns prepared to a filing-ready state for your review.
A Recurring Reconciliation, Not a One-Off Filing
Sales tax return preparation is recurring, deadline-driven work. Each filing period requires transaction data from sales and billing systems to be organized by the relevant state and jurisdiction, reconciled to the accounting records and checked against the business’s existing taxability and registration decisions. Preparation support assembles the data, documents differences and prepares the return package for review and submission by the business or its CPA.
What the Preparation Work Covers
- Transaction data assembled by state and reporting jurisdiction
- Gross, taxable, exempt and non-taxable sales separated per period
- Marketplace-facilitator collected amounts identified and excluded
- Credits, refunds, returns and adjustments applied to the correct period
- Sales tax liability reconciled to the general ledger control account
- Return forms populated per state and prepared for review
- Variance and exception notes for anything that does not tie
- A period-by-period record of what was prepared and filed
Data assembly and reconciliation
The period’s transactions are assembled by state and jurisdiction, classified using the treatment the business already applies, reconciled against the general ledger liability, and written into the state return form. What comes back is a prepared return, the reconciliation behind it, and a note on anything that did not tie.
Every tax determination
- Whether the business has a filing obligation in any state
- Registration decisions and any voluntary-disclosure approach
- Taxability and exemption positions, and tax engine configuration
- Review, approval, signature, submission and payment authorisation
- Any notice, assessment, appeal or audit response
The Source Records Sit Outside the Ledger
This is what makes sales tax different from the rest of the close. The amounts that go on the return come from sales, billing and point-of-sale systems, marketplace settlement reports and payment-processor statements — not from the general ledger. The ledger holds the liability the return has to agree with, which means the work is a reconciliation between two systems that were never designed to match.
Three things cause most of the differences, and each is reported rather than absorbed: a credit or refund posted to a different period than the original sale; a jurisdiction present in the sales data but not mapped in the ledger or the registration list; and a manual journal against the liability account made during the close. A difference that cannot be explained is listed as an exception. It is not cleared with a balancing entry, because a reconciliation that always ties tells nobody anything.
Where the business already runs a tax determination engine, the preparation work uses the determinations that engine produces. Setting one up, configuring it or changing how it treats a product is outside scope — see our compliance and boundaries page for why that line is drawn where it is.
State Coverage Is Confirmed During Scoping
Sales-tax preparation is scoped by jurisdiction rather than assumed from a standard nationwide package. The engagement should identify the states or local jurisdictions, registrations, filing frequencies, return forms and reporting periods that are actually included, based on the business’s records and instructions.
Accounstone prepares the agreed recurring returns from the source data provided. The business and its tax adviser remain responsible for determining where it has a filing obligation, including nexus and registration questions. For businesses selling through several channels, scoping should also identify which systems hold transaction, exemption, marketplace-facilitator and settlement data so that differences can be listed for review instead of silently treated as reconciled.
Frequently Asked Questions
What does sales tax return preparation actually include?
Assembling the period’s transaction data by state and reporting jurisdiction, separating gross, taxable, exempt and non-taxable sales, identifying marketplace-facilitator amounts already collected by the platform, applying credits and refunds to the correct period, reconciling the resulting liability to the general ledger control account, and populating the state return form so it is ready for review. The prepared return and its supporting reconciliation are handed back; the business or its CPA reviews, approves and files.
Does Accounstone determine whether a business has to register or file in a state?
No. Whether a sales tax obligation exists in a given state is a tax determination, and it belongs to the business’s CPA or tax adviser. Sales tax return preparation starts from the states the business or its adviser has already identified and registered in. If a state looks like it may need attention, that is raised as an exception for the adviser rather than answered.
Who files and signs the return?
The business or its CPA. Returns are prepared to a filing-ready state and handed back for review and submission under the filer’s own credentials. Accounstone does not submit returns to state portals, does not sign returns and does not authorise tax payments.
Which states can returns be prepared for?
The states and jurisdictions included are confirmed during scoping against the business’s existing registrations, filing frequencies, systems and available records. Do not assume every state or local filing is automatically included; the agreed scope should list the specific returns and periods to be prepared.
How are marketplace sales handled?
Amounts a marketplace collected and remitted as the facilitator are identified from the platform settlement records and separated from the amounts the business is reporting itself, so the same revenue is not reported twice. Where the platform reporting is ambiguous, it is flagged in the exception notes rather than assumed in either direction.
Does Accounstone decide whether a product or service is taxable?
No. Taxability and exemption positions are tax determinations and stay with the business’s CPA or tax adviser. Preparation works from the taxability treatment and exemption records the business already applies in its own systems. Where a transaction does not match any existing treatment, it is listed as an open item for the adviser to resolve.
Can you configure or set up a sales tax engine?
No. Implementation, configuration and administration of third-party tax software is outside the scope of every Accounstone service. The recurring preparation work runs inside systems that are already configured, using the determinations those systems already produce.
How does the sales tax liability get reconciled to the books?
The tax collected per the sales and billing systems is compared against the sales tax liability balance in the general ledger for the same period, and against what the prepared returns report. Differences are identified by cause — timing, a credit posted to the wrong period, an unmapped jurisdiction, a manual journal — and listed rather than cleared with a balancing entry.
What happens when a state sends a notice or opens an audit?
Responding to a notice, assessment, appeal or audit is the business’s CPA or tax adviser’s work, and no part of it is in scope here. What preparation support can do is produce the underlying records for the period in question: the transaction detail, the reconciliation, the prepared return and the exception notes from the time it was prepared.
What records are needed before sales tax preparation can start?
The list of states and registrations the business holds with their filing frequencies, transaction-level sales data by state and jurisdiction for the period, marketplace and payment-processor settlement reports, the exemption records already in use, the general ledger sales tax liability detail, and copies of recent filed returns so the opening position and prior treatment are visible.
Go deeper on the parts that matter
Sales Tax Nexus: What E-Commerce Sellers Need to Track
How state-by-state sales, marketplace activity and inventory records help a tax adviser assess potential nexus obligations.
Read itOutsourcing Tax Return Preparation: What CPA Firms and Businesses Need to Know
Where preparation ends and licensed judgment begins, and how the handoff should be structured.
Read itHow CPA Firms Can Handle Tax-Season Capacity Without Overhiring
How firms add preparation capacity for the season without committing to headcount they have to justify keeping in May.
Read itTalk to Us About Your Firm’s Busy Season
A free consultation, and a call that costs you nothing but the half hour. Tell us where the preparation is backing up and we will scope a pilot around it.
- Start with one client or one month of close work
- We prepare; your firm reviews, signs and e-files
- No EFIN, no banking control, no client-facing contact without your say-so
Which States Are You Filing In?
Tell us the states and filing frequencies you are registered for and which systems hold your transaction data. We can scope the recurring preparation from there.
