Shopify Starts Taxing Return Shipping on October 23. Turn Off Your Workaround Before January's Returns Hit.

Go check your tax settings this week, not in November. Starting October 23, 2026, Shopify will automatically calculate and apply sales tax to return shipping fees, the same way it already does for outbound shipping. If your store charges customers a fee to return an item and you built any kind of manual workaround to tax that fee correctly, you now have two tax calculations running on the same charge. Turn one off before the switch flips, or you will either overcharge every customer who pays a return fee or under-remit to a state that expects the tax you collected.

This is a small line item that lands at the worst possible time to ignore it. Return volume spikes in January, right after the biggest sales quarter of the year. Fix the setting now, while return volume is low, not in the first week of January when your support queue is full of BFCM gifts coming back.

What is actually changing

Per Shopify’s own changelog, merchants using Shopify Tax or Shopify’s Tax Platform will see estimated tax appear automatically when a return is initiated on any order shipped to a US address, and a final tax amount recorded once the return is processed. It flows into your tax reports the same way outbound shipping tax does. Shopify says it respects your existing shipping-tax settings: if your state treats shipping as untaxed, return shipping in that state stays untaxed. This is not a new tax. It is Shopify closing a gap where the outbound leg of a shipment was taxed correctly and the return leg was not.

Whether that matters to you depends on your state mix. Shipping charges are already taxable, when not separately itemized, in roughly half of US states, including Texas, New York, Ohio, Pennsylvania, and Washington, among others, per Avalara’s state-by-state shipping tax guide. If a meaningful share of your customers sit in one of those states and you charge a return label fee, this change touches real transaction volume, not an edge case.

Who has a workaround to check

Two groups need to look at this before October 23.

Anyone who built a manual patch for this gap. If your finance team, a tax app, or a custom checkout script has been adding tax to return shipping fees on its own, because someone caught the gap in an audit or a state notice, that patch and Shopify’s new automatic calculation will both fire on the same order once the change goes live. That is double taxation on every return with a fee, in every taxable state, starting the day the update ships.

Anyone who has been quietly under-collecting. If you never had a workaround, you have been under-collecting tax on return shipping fees in every state where shipping is taxable, for as long as you have charged those fees. Shopify’s fix closes that gap going forward automatically. It does not fix your exposure on returns processed before October 23. That is a conversation for your accountant, not a reason to panic, but it is worth a five-minute flag to whoever handles your sales tax filings.

The math

Illustrative, run it on your own return volume and fee before you draw conclusions.

Say you run a mid-size apparel brand doing 4,000 returns a month, with a $6.99 return label fee, and 50% of your customers ship from a state that taxes shipping at an average 7% rate. That is 2,000 taxable returns a month at roughly $0.49 in tax per return, or about $980 a month, near $11,760 a year, in tax that now gets calculated and collected automatically where it may not have been before.

If you have a workaround still running on top of that and don’t catch it, you are charging that same $980 a month twice; call it an extra $0.49 per taxable return that customers were never supposed to pay. On its own that looks trivial per order. At 2,000 orders a month it is real money you will have to refund once someone notices, and it is the kind of billing error that shows up in chargeback disputes and one-star reviews faster than it shows up in your own reporting.

What to do before October 23

1. Pull up your tax settings now. In Shopify admin, confirm whether you are on Shopify Tax or a third-party Tax Platform integration, and check whether return shipping fees are currently being taxed by anything other than Shopify itself, an app, a Flow automation, a custom line item, or a manual adjustment your ops team applies.
2. If you find a workaround, retire it before October 23. Do not leave it running “just in case.” Running it alongside Shopify’s native calculation is the double-tax scenario above, and it is harder to catch after the fact than to prevent now.
3. If you have never taxed return shipping and you sell into taxable-shipping states, loop in whoever files your sales tax. This is a forward-looking fix, not a retroactive one. Know your exposure before a state finds it for you.
4. Recheck it once, after January. Your return volume in the first three weeks of January will be the real stress test for this setting. Spot-check a sample of processed returns against what actually got remitted, and confirm the numbers match what you expected before you file that quarter.

None of this is tax advice. Sales tax exposure depends on your nexus, your state mix, and your product taxability, so confirm the specifics with your accountant or a sales tax specialist before you change anything in production.

The bottom line

This is not a headline-grabbing platform change, and that is exactly why it is easy to miss until a customer complains about being charged tax twice on a return, or a state notice arrives asking why return shipping tax wasn’t collected for the last two years. Five minutes in your tax settings this week is cheaper than either outcome. Do it before BFCM returns start landing in January, not after.

If you want a second set of eyes on your Shopify tax configuration before Q4, or want your return-fee economics modeled properly ahead of the holiday return wave, book a call.