The short version: "Automatic sales tax" means three genuinely different things, and almost every platform only does the first. Calculating the right rate at checkout is common. Filing a return with each state is rare. Remitting the money is rarer still. Shopify does all three through Shopify Tax, free to calculate on your first $100,000 of US sales, then 0.35% capped at 99¢ an order, with filing priced as a flat fee per return and enrolment required. Most other platforms in this category calculate and stop. Before you believe any feature name, ask which of the three jobs it actually does.
All figures came from each company's own pages in July 2026.
Three separate jobs that get bundled under one phrase.
A platform that calculates has removed maybe a fifth of the work. The remaining four fifths are filing and remitting, and they arrive every quarter whether or not you are busy.
So the question to ask any vendor is not "do you handle sales tax." It is "which of calculate, file, and remit do you do, and in which states?" That question separates the marketing from the product in about ten seconds.
Fewer than the feature lists suggest, and two are worth knowing about.
Shopify, through Shopify Tax, does all three. Its own page describes automating "submissions and remittance," and filing involves confirming account details and selecting a payment method for remittance. The catch is that automated filing requires enrolment and an eligibility check, so it is not automatic in the sense of being on by default.
Homegrown states that sales tax is calculated, filed, and remitted in all 50 states, included in its subscription rather than priced per return.
Beyond those two, most platforms in this category calculate. Some do more and do not describe it clearly, which is why the question matters more than any comparison table.
This is the part that is not in the $29 headline, and it is worth knowing before you assume the full service is free.
Work through what that means. A store doing $150,000 a year pays 0.35% on the $50,000 above the threshold, which is $175. A store at $300,000 pays $700. The 99¢ per-order cap protects large baskets, and the $5,000 annual cap means the fee tops out.
Below $100,000 in sales, calculation costs nothing. So for most small food businesses the calculation side of Shopify Tax genuinely is free, and the cost that applies is the per-return filing fee.
Since that filing fee is described rather than published as a number, get it in writing before assuming. Returns can be monthly in some states, so the number of returns per year is at least as important as the fee per return. A business registered in three states filing monthly is 36 returns a year.
Most of them, and it is worth being precise about what each one actually says rather than assuming.
Big Cartel lists a feature called "Sales tax autopilot" on its plans without defining the scope. That name could describe any of the three jobs. Our Big Cartel pricing breakdown covers why this is the first question to put to their support, and it is a genuine question rather than a rhetorical one.
Squarespace, Wix, and Square Online all calculate tax at checkout. None of them describes filing or remitting on your behalf on its pricing page, so assume that work stays with you unless their support says otherwise.
The farm and CSA platforms, including Farmigo, Local Food Marketplace, GrazeCart, and Local Line, do not advertise remittance on their pricing pages either. For a farm selling in one state that is often manageable; for one selling at markets across a state line it is not.
WooCommerce has extensions that calculate and very few that file. Tax is one of the places where "free plus extensions" quietly becomes expensive, since a capable tax extension sits at the upper end of the $29 to $299 annual range and still usually stops at calculation.
The honest position on all of these: a feature name is not a scope. Ask.
Enough that it changes the platform decision, which is why it belongs in a buying guide rather than an accounting one.
A single-state seller filing quarterly does four returns a year. Each one means pulling your sales by jurisdiction, entering it into the state portal, and paying. Call it an hour each if your records are clean, considerably more if they are not. That is four to eight hours a year, which is annoying rather than serious.
A seller with obligations in three states filing monthly is doing 36 returns a year. At an hour each that is most of a working week, every year, forever. At that point automated filing is not a convenience feature, it is the difference between the business being enjoyable and not.
The variable that decides which of those you are is nexus: where you have enough presence or sales to owe tax. Selling at a market across a state line, shipping to another state above its threshold, or storing inventory somewhere can all create one. Our guide to sales tax nexus for online food sales covers how it arises, and the Streamlined Sales Tax governing board publishes the multi-state framework that many states use to simplify registration and filing.
Six questions, and the first three do most of the work.
Question four is the one nobody asks and everyone should. Automated filing shifts work but not necessarily liability, and knowing who is responsible for a penalty is worth establishing while you are still choosing rather than after a notice arrives.
Question two is the one most likely to produce a surprise. A platform that files in the twenty-four states participating in a simplified framework is doing a genuinely useful job and is not doing all fifty, and "we handle sales tax" covers both situations equally well. Ask for the list, and check that it includes the states you actually sell into rather than the ones you might one day.
Whatever platform you pick, a few things have to be true on your side, and none of them are automatic.
Point one catches people out constantly. Automated filing is not automated registration, and a platform offering to file in all fifty states is offering to file where you are registered, not to register you. That first step is yours everywhere.
If you want to see what the reporting side actually looks like before committing, running a quarter of real orders through a platform that files tells you more than any feature list, because the question is not whether a return gets submitted but whether the numbers on it match your own.
For some businesses, yes, and it is worth being clear about which.
It probably does not matter much if: you sell in one state, at one market, under that state's registration threshold, with four quarterly returns a year. A platform that calculates is fine, and an hour a quarter is a reasonable price for keeping your options open.
It probably does matter if: you sell across a state line, ship anywhere, sell at markets in more than one jurisdiction, or file monthly. At that point the hours compound, and a platform that files is buying back a week of your year.
It definitely matters if: you have already missed a filing. Penalties and interest for late sales tax returns are levied by state and they accrue whether or not you were busy, and a zero return still has to be filed if you hold a registration.
The general shape of the obligation is set out in the SBA's guidance on paying business taxes, though your state's revenue department is the binding authority on rates, thresholds, and schedules. Our guides to reporting your food sales taxes and sales tax at farmers markets cover the practical side.
Take a food business doing $60,000 a year with obligations in two states, filing quarterly, so eight returns.
The pattern is that the subscription differences are small and the filing arrangement is the large variable, either as a per-return fee or as eight hours of your time. Pricing pages compare the first and ignore the second.
If the filing is the thing you want gone, Homegrown is $10 a month billed annually with 0% commission and 2.9% plus $0.30 processing published up front, and it handles pickup at each place you sell with its own schedule and cutoff, local delivery with a radius and a route, and sales tax calculated, filed, and remitted in all 50 states as part of the subscription rather than per return. The honest bounds: it does not ship nationally, it is not a website builder, it has no app ecosystem, and it does not sell by weight or run drop windows. If you need national shipping with multi-state nexus at scale, Shopify's tax service is built for a larger operation than this. You can put one quarter of real orders through it and see what the filing actually looks like rather than taking anyone's word for it.
Every platform below shows the same four commercial facts, because a table that lists one platform's transaction fee and not another's is not a comparison. "Not published" means exactly that: the company does not state it publicly.
| Platform | Calculate, file, remit | Subscription (annual) | Free trial | Platform fee | Card processing |
|---|---|---|---|---|---|
| Homegrown | Calculates, files and remits in all 50 states | $10/mo billed annually | 7-day free trial | $0 platform fee (0% commission) | 2.9% + $0.30 processing |
| Shopify | Calculates, files and remits for enrolled merchants | $29/mo Basic | 3-day trial, then $1/mo for 3 | 2% platform fee if not on Shopify Payments | from 2.9% + $0.30 processing |
| Square Online | Calculates; filing is on you | Free tier; paid from $29/mo per location | 30-day trial on paid plans | $0 platform fee | 3.3% + $0.30 free tier, 2.9% + $0.30 paid |
| Big Cartel | "Sales tax autopilot", scope not defined | Platinum $12/mo ($144/yr) | 7-day free trial | $0 platform fee | Your own provider, so 2.9% + $0.30 typical |
| Wix | Calculates via integration; filing is on you | Light $17/mo, Core $29/mo | No free trial | $0 platform fee | 2.9% + $0.30 processing (Amex 3.7%) |
| Etsy | Collects and remits marketplace tax for you | No subscription | n/a | $0.20 listing + 6.5% commission | 3.0% + $0.25 processing |
Shopify does, through Shopify Tax, for enrolled and eligible merchants, at a flat fee per return. Homegrown states that filing and remittance are included in all 50 states. Most other platforms in this category calculate at checkout and leave filing with you.
Calculation is free on your first $100,000 of annual US sales, then 0.35%, capped at 99¢ per order and $5,000 a year per region. Filing is charged as a flat fee per return, with no annual fee or set term.
Calculating works out the right rate at checkout. Filing submits a return to each state on its schedule and in its format. Remitting sends the money. They are three separate jobs, and most platforms only do the first.
Its pricing page lists "Sales tax autopilot" without defining the scope. Ask their support directly whether it calculates, files, or remits, and in which states, before relying on it.
Usually yes, if you hold a registration. A zero return is still a return in most states, and missing one because you were not trading is a common and avoidable penalty.
It depends on your states and volume. One state filing quarterly is four a year. Three states filing monthly is 36. That number matters more than the fee per return when comparing platforms.
If you sell in one state and file quarterly, probably not. If you sell across state lines, ship, or file monthly, the hours compound quickly and automated filing can be worth more than every other feature difference combined.
"Automatic sales tax" is three jobs wearing one name. Calculating is common and mostly solved. Filing and remitting are where the hours are, and far fewer platforms do them than the feature lists imply.
Shopify does all three through Shopify Tax, with calculation free below $100,000 in annual sales and filing priced per return, subject to enrolment. Homegrown states that all three are included across 50 states. Most other platforms calculate and hand the rest back to you.
The only reliable way through this is one question, asked before you commit: do you calculate, file, and remit, in which states, and at what cost? Any answer shorter than that is a feature name rather than a capability.
