The Infrastructure Gap: How to Know If Your Business Is Built for What’s Next
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Sales Tax Automation

Sales Tax Automation Software: Keep Your Data Reliable

Every sale creates a tax record that needs to end up in your books. Synder makes sure it lands in the right place – correct codes, correct accounts, no manual reconciliation before filing.
100% accurate data sync
140+ hours saved monthly
150k+ records processed automatically per client
Book a demo
Three business professionals, two women and one man, working together and looking at a desktop computer screen.
Confused woman holding a financial document and looking at a laptop with callouts showing tax issues: 'Missing tax codes, some transactions excluded from tax reports' and 'Tax overstatement, marketplace tax may inflate Sales Tax Payable.'Man in glasses and suit looking at papers with alerts about failed payment for invoice #5678 and 23 unmatched transactions on screen.

Sales tax is easy
to get wrong at scale

Multiple states and dozens of local jurisdictions make manual tracking hard to scale.

Missing tax codes lead to empty or incomplete tax reports, even when amounts are recorded.

Incorrectly recorded marketplace facilitator tax inflates your Sales Tax Payable.

Tax handling that keeps your books clean

Synder keeps tax data consistent across platforms so your reports stay clean and compliant

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Multi-state tax tracking

Synder pulls tax data from your platform. If the rate isn't available, it calculates it and finds the matching tax code in your accounting system – across state, county, and city-level jurisdictions.

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Marketplace facilitator tax handling

Amazon, eBay, Etsy, Walmart, TikTok Shop, PayPal, and Shopify remit tax on your behalf. Synder records withheld tax separately – either as a non-taxable line item with a matching expense line, or in the Sales Tax field linked to a liability account.

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VAT/GST that feeds your tax reports

Synder supports tax code mapping in both sync modes. In Per Transaction sync, codes are applied at the line level, so your accounting software tax reports pick them up for filing. In Summary Sync, tax comes in aggregated – Groups can split it by region or product if you need more granularity.  

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Accurate tax liability

What's in your books matches what your platforms actually collected. Synder pulls tax data directly from the source and handles incomplete data automatically, so there's nothing to manually reconcile before filing.

Tax data that's ready to file, not ready to clean up

From multi-state tracking to line-level tax codes, every tax detail flows into your books in the right structure, so your reports are filing-ready, and your compliance tool stays in sync.

Seeing platforms not talking to each other as tax season comes

Pulling tax data from every platform into your books in one sync

Tracking tax obligations across 12 states in a spreadsheet

Tracking sales tax per state, region, or country automatically

Missing tax data in your QuickBooks reports

Applying tax codes at the line level with filing-ready reports

Starting every VAT return with manual cleanup

Keeping compliance tools connected and books accurate

30+ integrations, one unified view of your finances

Synder connects 30+ sales channels and payment processors to your accounting platform or ERP automatically, so your books always reflect what's actually happening in your business.

Start a free trialSee all integrations
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Trusted by thousands of users and partners
4.7
average rating based on 3,400+ reviews
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Built for complete tax reporting data

Explore how Synder helps businesses across industries

"Instead of a bookkeeper spending 40 hours a month manually reviewing thousands of transactions each month—clicking into each one, checking metadata, and categorizing it—Synder does it all automatically, the moment the charge happens. Which means we save 480 hours and almost $24K yearly."

Justin McKelvey
Head of Product at PlayYourCourt
Dermeleve brand name with a blue medical cross symbol to the left.
480+ hours
saved yearly on transaction categorization
$24K+
saved on bookkeeping services yearly
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No manual entry
effortless Stripe-QuickBooks integration

"Synder drastically speeds up the process of reconciliation and eliminates the need to manually check massive transaction files. It now takes me about 40 minutes to finish and review a month’s data, whereas manually, it would have taken at least two days."

Olena Svoiak
Financial Manager at Stape
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95% time
saved on manual reconciliation
180 hours
saved yearly on reviewing end-of-the-month data
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100%
GAAP-compliant revenue recognition and reporting

"Since integrating Synder, Decimal has streamlined workflows, reduced reconciliation time by over 50%, and saved 6-8 hours per client each month, enabling the team to focus on strategic advisory services and client growth."

Kristin Miller
Team Lead at Decimal
Dermeleve brand name with a blue medical cross symbol to the left.
140 hours
saved monthly on month-end
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20 clients
successfully integrated
with Synder
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9 platforms
accurate automated bookkeeping for Stripe, Shopify, QuickBooks, and more

FAQ

Ready to get your tax records in order?

Your platforms collect the tax. Synder makes sure it lands in the right place in your books.
Get tax data in order
Map of the US highlighting 12 states with sales tax coverage, showing 9.5% sales tax applied in California Los Angeles and $8,210 tax auto-remitted by multiple platforms.
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