Multi-State Sales Tax. One Less Headache.
Calculate, collect, and file sales tax across all 50 states. Accurate to the ZIP code. Fast enough you won't notice it.
Setup takes about 10 minutes. Seriously.
The problem
12,000+ tax jurisdictions. 45 states with sales tax. Rates that change mid-quarter without warning.
If you sell across state lines, you already know this pain—figuring out if you owe in a new state, missing deadlines you didn't know existed, overpaying because it's easier than getting it right. Every state has different rules, different thresholds, different forms. Some change their rates twice a year. It's a mess, and it shouldn't be your problem to solve manually.
Sales tax on autopilot
Taxync monitors your sales across every state, calculates the right tax at the point of sale, and files your returns when they're due. You connect your sales channels, we handle the rest. When a new nexus threshold gets crossed or a filing deadline approaches, you'll know about it before it becomes an issue.
Everything you need. Nothing you don't.
Built for businesses that sell in multiple states and don't want to think about sales tax more than they have to.
Real-Time Tax Calculation
Sub-millisecond lookups across 41,000+ ZIP codes. Your checkout doesn't slow down. Your tax stays accurate.
Economic Nexus Monitoring
Track your sales thresholds in every state, automatically. Know the moment you trigger nexus—before it becomes a problem.
Automated Filing
We prepare your returns. You review them. Click submit. That's it. No more wrestling with state portals at midnight.
Exemption Certificates
Manage B2B exemptions without the filing cabinet. Store, validate, and apply certificates to transactions automatically.
10+ Integrations
Shopify, Stripe, QuickBooks, WooCommerce, and more. Connect in minutes, not days. Your data flows where it needs to.
Compliance Dashboard
One screen. Every state. Filing deadlines, nexus status, transaction volume, and audit-ready reports—all in one place.
Three steps. That's the whole thing.
No implementation project. No six-week onboarding. Connect, calculate, file.
Connect your sales channels
Link Shopify, Stripe, QuickBooks, or upload manually. Most integrations take under five minutes to set up.
Tax calculated on every transaction
Automatic, accurate, ZIP-level. Every sale gets the right rate applied in real time. You don't have to think about it.
Review and file
We prepare the returns. You check them over. Click submit. Done before your coffee gets cold.
All 45 states that collect sales tax. Plus DC.
Full rate coverage, filing support, and nexus tracking in every jurisdiction that matters.
Simple pricing. No surprises.
Plans start at $49/month.
14-day free trial. No credit card required. Cancel anytime.
Built right. Not just built fast.
We don't have a thousand customers yet. What we do have is infrastructure we'd bet the company on.
Built on Rust
Our calculation engine is written in Rust. Not because it's trendy—because it's fast and it doesn't crash.
AES-256 Encryption
Your tax data is encrypted at rest and in transit. We can't read it. Nobody else can either.
99.9% Accuracy Guarantee
We stand behind our calculations. If we get a rate wrong, we'll cover the difference. That's the deal.
No Credit Card to Start
14-day free trial. Full access. Cancel anytime. We'd rather earn your business than trap you into it.
Common questions
If yours isn't here, reach out. We reply fast.
Economic nexus means a state can require you to collect sales tax if you sell enough there—even without a physical presence. Most states set the threshold at $100,000 in sales or 200 transactions per year. Once you cross it, you're on the hook. Taxync tracks your progress toward every state's threshold so you know exactly when you need to register.
Sub-millisecond. Our Rust-based engine handles lookups across 41,000+ ZIP codes without adding noticeable latency to your checkout. We're talking under 1ms for a rate lookup. Your customers won't wait, and your tax will still be accurate to the jurisdiction level.
Shopify, Stripe, QuickBooks Online, WooCommerce, BigCommerce, Amazon, Xero, and more. We also have a REST API if you want to build your own integration. Most connections take less than five minutes to set up.
No. The 14-day trial is completely free with no credit card required. You get full access to every feature. If you decide it's not for you, just don't subscribe. We won't charge you or hassle you.
We won't cut you off mid-month. If you're consistently over your plan's limit, we'll let you know and suggest an upgrade. No surprise charges, no interruptions to your tax calculations.
Yes. We prepare your state sales tax returns based on your transaction data, pre-filled and ready to go. You review everything, approve it, and we handle the submission. No more logging into 15 different state portals.
AES-256 encryption at rest, TLS 1.3 in transit. We run on SOC 2 compliant infrastructure with role-based access controls and audit logs for everything. Your tax data is sensitive, and we treat it that way.
Ready to stop worrying about sales tax?
Join the free trial. Connect your first sales channel in minutes. See why sales tax doesn't have to be the worst part of running a business.