What each platform documents, side by side
This table records only what the vendors' own pricing and help pages said when we read them on 30 October 2026. It is a research summary, not tax advice, and it is not a substitute for a tax professional or your tax authority. [1][5][6]
| Platform | Automatic calculation | VAT handling | Added tax fee | Files or remits for you? |
|---|---|---|---|---|
| Shopify (Basic, Grow, Advanced) | Automated sales tax calculations listed on all plans [1] | Shopify Tax covers the US, EU, UK and Canada; VAT validation, exemptions and invoicing listed on all plans [1][2] | Free until $100,000 in sales; then 0.35% of US orders or 0.25% of EU, UK and Canada orders in regions where you collect, capped at $0.99 per order [3] | No, unless US sales tax is managed by Shopify or the store is enrolled in automated filing [4] |
| Webflow Ecommerce | "Automatically calculate sales tax and VAT at checkout" listed on Ecommerce plans [5] | Same feature line covers VAT [5] | No separate tax fee listed; Standard plan carries a 2% transaction fee, Plus and Advanced 0% [5] | The pricing page does not say Webflow files or remits; plan for it yourself [5] |
| systeme.io | Adds VAT at checkout once you untick "Don't charge VAT to customers on payment pages" [8] | Information products and services: buyer's country rate added to a price entered without VAT. Physical products: seller's country rate set per product [7] | Pricing page says no transaction fees and does not mention tax [6] | The VAT article does not mention filing, remitting or US sales tax [7] |
| Stripe Tax (add-on for Stripe Checkout or Payment Links) | Calculation and collection where you are registered [9] | Customer-location rates where registered [9] | Tax Basic: 0.5% per transaction for no-code integrations; Tax Complete from $90 per month on a 1-year contract [9] | Only Tax Complete includes registrations and filings [9] |
Shopify: free calculation until $100,000, then a per-order fee
Shopify's pricing page lists automated sales tax calculations, tax liability tracking, and VAT validation, exemptions and invoicing on Basic, Grow and Advanced. The Shopify Tax pricing article sets the fee: nothing until the store reaches $100,000 (or EUR 100,000, GBP 100,000 or CAD 100,000), then 0.35% on US orders and 0.25% on EU, UK and Canada orders on Basic, Grow or Advanced. Each order's fee is capped at $0.99. [1][3]
Two details are easy to miss. Stores created on or after 13 May 2026 count lifetime sales toward the threshold, while older stores count per calendar year. And the fee applies to orders from regions where you have activated tax collection, including orders where no tax was charged because the product is exempt. [3]
Worked example: a store created this year sells $150,000 in total, all to US customers in states where it collects, at an average order of $60. The first $100,000 is free. The remaining $50,000 costs about 0.35% x $50,000 = $175, because 0.35% of a $60 order is $0.21, well under the $0.99 cap. [3]
Webflow and systeme.io: calculation without a separate tax fee
Webflow lists automatic sales tax and VAT calculation at checkout in its Ecommerce plan comparison. Ecommerce plans were $29, $74 and $212 per month billed yearly; the $29 Standard plan adds a 2% transaction fee on top of Stripe or PayPal processing, while Plus and Advanced list 0%. The pricing page does not describe registration or filing services. [5]
systeme.io's help article explains its VAT logic. For information products and services, such as courses, the buyer's country rate is applied: you enter a price without VAT and systeme.io adds the rate at checkout. If the order form has no Country field, the rate defaults to 0%, so a missing field can silently undercharge. For physical products, the seller's country rate applies and you set it per product. The article does not cover VAT numbers, reverse charge or US sales tax. [7]
To charge VAT across the account, systeme.io tells you to open Settings, then Payment settings, and untick "Don't charge VAT to customers on payment pages". Check that box on day one rather than after your first sales. [8]
What stays your job on every platform
A checkout that adds tax does not make you registered. Thresholds come from tax authorities, not from website builders. Examples from official pages: the EU applies a EUR 10,000 threshold to distance sales to consumers in other EU countries, and the One-Stop Shop lets a seller register in one EU country to declare VAT on those sales. In the UK, registration is required when taxable turnover over the last 12 months goes over GBP 90,000, and a business based outside the UK that supplies goods or services to the UK must register regardless of turnover. [10][11]
In the US, the SBA tells businesses to check with state and local governments for their tax obligations and links to each state's revenue department. Shopify's own US setup guide says it is important to consult a tax professional. [12][4]
- Decide where you have an obligation to register (your home country or state, plus any threshold you cross elsewhere).
- Register with each tax authority before you switch on collection for that region.
- Configure the platform: turn on collection region by region, set product tax categories, and add a Country field to systeme.io order forms.
- File returns and pay the tax collected on each authority's schedule; the platforms above do not do this by default.
- Keep order exports and tax reports for every filing period.
Which setup fits which seller
Sellers of physical goods to US customers get the most built-in help from Shopify: calculation is included, the tax fee does not start until $100,000, and Shopify offers a managed or automated filing route. Read what that route covers before you rely on it. [2][4]
EU or UK sellers of courses and other information products on systeme.io get buyer-country VAT added automatically once it is switched on. The article does not cover invoices or VAT numbers, so B2B sellers should confirm how those are handled before launch. [7][8]
Designers selling a small catalog on Webflow get calculation on every Ecommerce plan, but the Standard plan's 2% transaction fee is $20 per $1,000 of sales, four times Stripe Tax Basic's 0.5% ($5 per $1,000). Anyone selling through bare Stripe links can add Stripe Tax at 0.5% per transaction, or pay for Tax Complete if they want registrations and filings handled. [5][9]
Pre-launch tax checklist
- Read the tax page for your platform end to end: Shopify Tax pricing, Webflow's Ecommerce plan comparison, or systeme.io's VAT article. [3][5][7]
- Write down your home-country registration status and any threshold you expect to cross in the first year.
- Run a test checkout from two different countries or states and confirm the tax line on each.
- On systeme.io, confirm every order form has a Country field; without one the VAT rate defaults to 0%. [7]
- On Shopify, track sales toward $100,000 so the 0.25% to 0.35% fee does not surprise you. [3]
- Book time with a tax professional before crossing any registration threshold.
Questions before you decide
Does Shopify charge extra for sales tax calculation?
Shopify Tax is free until a store reaches $100,000 in sales. After that it charges 0.35% on US orders or 0.25% on EU, UK and Canada orders on Basic, Grow and Advanced, in regions where you collect tax, capped at $0.99 per order.
Will systeme.io charge VAT automatically?
Only after you untick "Don't charge VAT to customers on payment pages" in Payment settings. For information products such as courses it then adds the buyer's country rate, but only if the order form has a Country field; otherwise the rate defaults to 0%.
Does Webflow file my sales tax returns?
Webflow's pricing page lists automatic sales tax and VAT calculation on Ecommerce plans but does not describe filing or remitting. Plan to register and file yourself or with a separate service.
When do I have to register for VAT in the UK?
GOV.UK says you must register when taxable turnover over the last 12 months goes over GBP 90,000, or you expect it to in the next 30 days. A business based outside the UK that supplies goods or services to the UK must register regardless of turnover.
Sources & verification
Product details and prices can change. Check the linked provider before buying.
- Shopify pricing Accessed 30 Oct 2026
- Shopify help: Shopify Tax Accessed 30 Oct 2026
- Shopify help: Shopify Tax pricing Accessed 30 Oct 2026
- Shopify help: setting up US sales tax Accessed 30 Oct 2026
- Webflow pricing Accessed 30 Oct 2026
- systeme.io pricing Accessed 30 Oct 2026
- systeme.io help: how VAT is managed in systeme.io Accessed 30 Oct 2026
- systeme.io help: how to charge VAT to your customers Accessed 30 Oct 2026
- Stripe Tax pricing Accessed 30 Oct 2026
- Your Europe: cross-border VAT Accessed 30 Oct 2026
- GOV.UK: register for VAT Accessed 30 Oct 2026
- U.S. Small Business Administration: pay taxes Accessed 30 Oct 2026
Sources link directly to providers. Product buttons may use separately labeled affiliate links. Read our disclosure.