Cross-Border Tax Tools 2026 — Compared
If you sell cross-border to the EU, US, or globally, you need software that calculates the right tax at checkout, handles multiple jurisdictions, and ideally helps with filing. There are a lot of options. Most comparison articles online are affiliate-driven fluff. This series isn’t.
Every comparison in this series uses the same criteria, scored the same way, so you can compare across tools — not just within a single head-to-head article.
The Criteria
Section titled “The Criteria”We evaluate every tool on the same 12 axes. These are the things that actually matter to a seller shipping cross-border:
| # | Criteria | What We’re Checking |
|---|---|---|
| 1 | Local filing | Can the tool file your local/domestic tax returns natively, or is it calculation-only? |
| 2 | EU IOSS | Does it calculate destination-country VAT for sub-€150 B2C shipments to the EU? |
| 3 | EU OSS | Does it handle One Stop Shop for digital services or intra-EU distance selling? |
| 4 | US sales tax | Does it calculate US sales tax, track nexus thresholds, and support filing? |
| 5 | VAT calculation at checkout | Real-time, accurate tax calculation during the checkout flow — the core job. |
| 6 | Platform integrations | Which e-commerce platforms does it connect to? Shopify, WooCommerce, BigCommerce, marketplaces, ERPs? |
| 7 | Pricing model | How much does it actually cost? Per-transaction, monthly, annual contract, quote-based? |
| 8 | Setup complexity | Can a solo seller set it up in an afternoon, or does it need a developer and a sales call? |
| 9 | Reporting and records | Does it produce the reports you need for filing and audit readiness? |
| 10 | Ecosystem | What else does the tool connect to — payments, billing, invoicing, ERP, customs? |
| 11 | Support | Documentation quality, human support availability, and real-world reviews. |
| 12 | Best for | The honest verdict — who should use this tool and who shouldn’t. |
We don’t score numerically. Tax tools aren’t comparable on a 1-10 scale — a tool that’s perfect for a Shopify solo seller is terrible for a multi-entity enterprise, and vice versa. Instead, each comparison gives a clear verdict per criterion and an honest “best for” recommendation.
The Tools
Section titled “The Tools”Here’s the landscape of cross-border tax tools relevant to international sellers, with links to our head-to-head comparisons:
| Tool | Type | Starting Price | Local Filing | EU IOSS | US Sales Tax |
|---|---|---|---|---|---|
| GoodVat | End-to-end tax compliance, API-first | From $20/month | ✓ | ✓ | ✓ |
| Stripe Tax | Payment-integrated tax engine | 0.5% per transaction | ✗ | ✓ | ✓ |
| Avalara | Enterprise compliance platform | ~$8,000+/year | ✓ | ✓ | ✓ |
| Quaderno | SMB tax automation | ~€49/month | ✗ | ✓ | ✓ |
| Taxually | EU VAT compliance & filing | Quote-based | ✓ | ✓ | ✗ |
| Shopify Tax | Shopify-native tax engine | Included with Shopify | ✗ | ✓ | ✓ |
| Anrok | SaaS & digital products tax | Quote-based | ✗ | ✓ | ✓ |
| TaxJar | US-focused sales tax (Stripe-owned) | From $19/month | ✗ | ✗ | ✓ |
| TaxCloud | US-only SST-certified platform | Free for SST states | ✗ | ✗ | ✓ |
| Vertex | Enterprise tax technology | ~$30,000+/year | ✓ | ✓ | ✓ |
Quick guide to the landscape
Section titled “Quick guide to the landscape”If you want registration, calculation, invoicing and filing from one provider, GoodVat covers the full cycle in 190 countries, across any store or payment processor, for a flat monthly fee. Onboarding starts with a call rather than self-serve signup, and e-invoicing is still on the roadmap.
If you use Stripe for payments, Stripe Tax is the path of least resistance. It activates in minutes and handles EU and US tax calculation on Stripe transactions. It doesn’t file returns — pair it with an IOSS intermediary and local filing software.
If you’re on Shopify, Shopify Tax now handles checkout calculation natively (since April 2025). You may still need Avalara or Quaderno for filing and multi-channel support.
If you sell digital products or SaaS, Anrok and Quaderno are purpose-built for digital tax rules (place of supply, B2B reverse charge, evidence collection).
If you’re mid-size or enterprise with an ERP, Avalara or Vertex are the only realistic options — they have the integration depth and filing breadth for complex multi-entity setups. Choose Vertex if SAP is your ERP; Avalara for most other platforms.
If you’re a small seller just starting to sell internationally, you probably need Stripe Tax or Quaderno for calculation, plus a separate IOSS intermediary for filing. Total cost: under $100/month. If you’d rather have returns filed for you as well, GoodVat starts at $20/month.
If you’re a marketplace, payment processor or Merchant of Record, see Tax Compliance for Platforms below. Of the tools in this series, only GoodVat is sold as white-label infrastructure you can offer to your own users.
What Most of These Tools Don’t Do
Section titled “What Most of These Tools Don’t Do”It’s worth being explicit about the gaps:
- Only Taxually acts as your IOSS intermediary. The others calculate the right VAT at checkout, and GoodVat also prepares and files the monthly IOSS return, but sellers based outside the EU are legally required to appoint an intermediary (EAS Project, SimplyVAT, AVASK, etc.). We have a separate comparison of IOSS intermediaries.
- Most don’t file local tax returns. Only GoodVat, Avalara, Taxually, and Vertex offer broad local filing capabilities. The rest produce reports you feed into Xero, QuickBooks, or FreeAgent for filing.
- None of them replace an accountant. They get the numbers right. An accountant tells you what the numbers mean for your specific business.
Tax Compliance for Platforms (White-Label)
Section titled “Tax Compliance for Platforms (White-Label)”Every tool above is built for a business managing its own tax. There’s another kind of buyer: platforms whose users need tax compliance, and who want to provide it themselves.
GoodVat sells its compliance engine as a white-label API for these platforms:
| Platform | The problem | What GoodVat provides |
|---|---|---|
| Online marketplaces | Marketplace facilitator and deemed-supplier rules in the US, EU, UK and Australia can make the platform liable for tax on third-party sales | Tax calculated on every product sold, facilitator obligations met by jurisdiction, and threshold tracking, invoices and reports for each seller |
| Payment processors (PSPs such as Adyen, acquirers, PayFacs) | Stripe merchants get tax in the same dashboard where they take payments, and merchants move to Stripe for it | Tax calculation, invoicing and filing in your checkout and merchant dashboard, under your brand and your pricing |
| Merchant of Record platforms | An MoR is the seller of record and carries tax liability in every country it sells into | Calculation, registration and filing infrastructure for each new market, without a local tax team in every country |
How the other tools compare here: Stripe Tax serves platforms only through Stripe Connect, is Stripe-branded, and can’t be resold by a competing PSP. Avalara and Vertex are built into many platforms through partner programmes, but under their own brand and enterprise contracts. Quaderno, Taxually, Anrok and TaxCloud are sold to individual businesses.
Head-to-Head Matchup Grid
Section titled “Head-to-Head Matchup Grid”Find the comparison article for any two tools by reading across the row of one tool and down the column of the other. Each cell links to the relevant article.
All Comparisons
Section titled “All Comparisons”| Comparison | Focus |
|---|---|
| SaaS Payments: MoR vs PSP | What Paddle, Lemon Squeezy and Polar really cost, vs Stripe + GoodVat |
| GoodVat vs Stripe Tax | Full compliance service vs payment-native tax engine |
| GoodVat vs Avalara | End-to-end compliance at SMB vs enterprise price points |
| GoodVat vs Quaderno | Two flat-priced, multi-channel compliance tools |
| GoodVat vs Taxually | Global compliance vs EU VAT filing and IOSS intermediary specialist |
| GoodVat vs Anrok | All-channel commerce compliance vs SaaS tax specialist |
| GoodVat vs TaxCloud | Global compliance vs US-only sales tax |
| GoodVat vs Vertex | Online-business compliance vs enterprise ERP tax engine |
| Stripe Tax vs Avalara | SMB payment-integrated vs enterprise compliance |
| Stripe Tax vs Quaderno | Payment-integrated vs SMB tax automation |
| Stripe Tax vs Taxually | Checkout calculation vs EU VAT filing specialist |
| Stripe Tax vs Anrok | E-commerce tax vs SaaS and digital product specialist |
| Stripe Tax vs TaxCloud | Global cross-border vs US-only sales tax |
| Avalara vs Quaderno | Enterprise platform vs SMB tax automation |
| Avalara vs Anrok | Enterprise platform vs SaaS and digital product specialist |
| Avalara vs TaxCloud | Global enterprise vs US-only sales tax |
| Avalara vs Taxually | Enterprise platform vs EU VAT filing specialist |
| Vertex vs Stripe Tax | Enterprise infrastructure vs SMB payment-native tool |
| Vertex vs Avalara | Two enterprise platforms head-to-head |
| Vertex vs Quaderno | Enterprise infrastructure vs SMB tax automation |
| Vertex vs Taxually | Enterprise calculation vs EU/UK filing specialist |
| Vertex vs Anrok | Enterprise ERP platform vs SaaS specialist |
| Vertex vs TaxCloud | Global enterprise vs US-only sales tax |
| TaxCloud vs Quaderno | US-only sales tax vs multi-channel EU+US automation |
| TaxCloud vs Taxually | US sales tax vs EU VAT filing specialist |
| TaxCloud vs Anrok | US e-commerce tax vs SaaS and digital product specialist |
| Quaderno vs Taxually | SMB tax automation vs EU/UK VAT filing specialist |
| Quaderno vs Anrok | SMB multi-channel tax automation vs SaaS specialist |
| Taxually vs Anrok | EU VAT filing specialist vs SaaS tax engine |
| Shopify Tax — coming soon | Shopify’s native tax engine, standalone review |
| TaxJar vs Stripe Tax — coming soon | US-focused sales tax comparison |
| IOSS Intermediaries — coming soon | EAS, SimplyVAT, AVASK, Taxually, and others |
Related Guides
Section titled “Related Guides”- Selling to EU Consumers from the UK — the rules you need these tools to comply with
- Selling to EU Businesses from the UK — reverse charge, VIES, and B2B invoicing
- EU VAT Number Checker — free tool to validate B2B customer VAT numbers
- UK VAT Setup Checklist — the full step-by-step for domestic VAT