Sales tax, explained without the jargon.
Practical articles on nexus, registrations, exemption certificates, product taxability and platform selection — written for finance teams who need the rule and the next step, not a legal treatise. Every piece is written with a Galvix compliance manager and carries a visible date, so you can see how current it is.
12 Best Sales Tax Software for US Businesses To Try in 2026
Explore the best sales tax software for 2026. Compare top platforms and discover why Galvix is the smarter managed alternative.
Start with the question you have
Six stages, in the order sales tax compliance actually happens — from working out where you owe, to being ready when a state writes to you. Each stage has its own filtered view you can link to or return to directly.
Start here What is sales tax compliance? The whole obligation in plain terms: who owes tax, what the work involves each month, and what it costs to get wrong. 5 articles Browse →Economic and physical thresholds, reference periods, trailing nexus and marketplace facilitator rules.
Nexus articles →State permit walkthroughs, fees, timelines, and how to close a registration you no longer need.
Registration guides →SaaS, digital goods, services and bundling, state by state.
Taxability articles →Collecting, validating, renewing and storing certificates before an audit asks for them.
Certificate guides →Returns, due dates, frequency changes, zero returns and prepayments.
Filing articles →Responding to state notices, voluntary disclosure, back taxes and audit readiness.
Audit articles →Reference & decisions
Not a stage — the lookups and choices that sit alongside every stage.All articles
90 articles · showing 1–24
How to Stop Filing a Return in Avalara Managed Returns
Learn how to expire a return in Avalara Managed Returns so Avalara stops filing it, including timing requirements and what happens to expired returns.
How to Fix CertCapture API Errors in Avalara
Learn how to resolve CertCapture API errors that prevent exemption certificates from being applied in AvaTax, with step-by-step fixes for each error message.
How to Handle Tax Exempt Customers in Shopify with Avalara
Learn how to configure and troubleshoot tax-exempt customers in Shopify when using Avalara, including customer settings, company profiles, and regional exemptions.
How Does the Avalara Economic Nexus Report Work
Learn how Avalara's economic nexus reports track your sales thresholds, which reports are available, and how to generate them in AvaTax.
How to Use the Avalara Tax Calculator
Learn how to use the AvaTax tax calculator to preview rates, validate addresses, and test tax scenarios in your Avalara account.
How to Export Exemption Certificates from Avalara
Learn how to export customer and vendor exemption certificates from Avalara ECM as PDFs or CSV files for download, printing, and audit records.
How to Void a Transaction in AvaTax
Learn how to void a transaction in AvaTax, mark test data as voided, and understand how voided transactions affect reports and tax returns.
How to Set Up Avalara for Shopify
Learn how to install and connect the Avalara Tax Compliance app to your Shopify store for automated US sales tax calculation and compliance.
How to Look Up a Sales Tax Rate for an Address in Avalara
Find current sales tax rates by street address, city, ZIP Code, or county in Avalara Tax Research. Step-by-step instructions for rooftop and regional rate lookups.
How Does AvaTax Calculate Sales Tax
Learn how AvaTax determines sales and use tax amounts using address-based sourcing, jurisdiction rules, tax codes, and exemption status.
How to Import Historical Transactions into Avalara AvaTax
Learn how to import past invoices and purchase orders into AvaTax using the standard transaction template, with required fields and troubleshooting steps.
Managing sales tax audits in SaaS
From preparing for an audit to managing one, learn how to prepare your team for each stage of a sales tax audit.
Shopify Automated Filing Is Ending: What You Need to Do
Shopify automated filing is ending. Check your final filing dates and learn how to switch to expert-reviewed sales tax filing.
How to File Kentucky Sales Tax Online
Prepare receipts, deductions, use tax, payment details, and filing proof before submitting Kentucky sales tax through MyTaxes.
How to File Nevada Sales Tax Online
Nevada filing starts with county-level sales data. Learn what My Nevada Tax calculates and what your team must verify.
How to File Maryland Sales Tax Online
Prepare Maryland sales, special-rate tax, marketplace exclusions, and payment details before filing Form 202 through Tax Connect.
How to File Tennessee Sales Tax Online
Prepare Tennessee sales, county allocations, exemptions, special-rate activity, and payment details before filing in TNTAP.
How to File Illinois Sales Tax Return Online
Prepare ST-1, ST-2, deductions, destination data, and filing proof correctly before submitting your Illinois return.
How Do You File Ohio Sales Tax Online?
File Ohio sales tax online correctly with county reporting, exemption checks, payment review, and clear proof of submission.
How Do You File Virginia Sales Tax Online?
Virginia filing gets easier when every sale reaches the right locality before the return reaches Virginia Tax.
How to File a Minnesota Sales Tax Return Online
File Minnesota sales tax return correctly across state and local lines while keeping payment and filing records organized.
How to File Missouri Sales Tax Online
Know how to file Missouri sales tax online with the right locations, return figures, payment steps, and confirmation records.
How to File Pennsylvania Sales Tax Online
Understand PA sales tax filing process through myPATH with correct local tax, taxable sales, payment timing, and filing proof.
How to File North Carolina Sales Tax Online
Know how to file North Carolina sales tax confidently across E-500, E-536, county rates, exemptions, payment, and final confirmation.
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Before you start reading
Three questions that decide which of these articles is worth your time.
Which guide should I read first?
Start with nexus. Until you know which states you have crossed a threshold in, registration, taxability and filing questions cannot be answered in any useful order.
How often are these articles updated?
We revisit an article whenever a state changes a rate, threshold or filing rule, or a vendor changes its pricing. Each card shows its publication date, so you can see how current it is before you rely on it.
Do I need software or a service?
Software calculates tax and leaves filing, registrations and notices with your team; a managed service takes the work over. The comparison cluster sets out both models across Avalara, TaxJar, Vertex, Numeral, Kintsugi and Galvix.
The last sales tax article you'll need to read.
Our compliance team takes over nexus monitoring, registrations, filings, exemption certificates and notices in all 50 states. Live in 2–7 days.