Best AI Tax Software: 9 Tools for Filing and Sales Tax
· Updated October 31, 2026
Part of our AI for Finance guide
The best AI tax software for most self-employed people and small businesses in 2026 is TurboTax. It pairs Intuit Assist AI guidance with live tax experts and a published accuracy guarantee.
FreeTaxUSA is the cheapest way to file. Keeper is the best pick for tracking write-offs all year. For sales tax automation, look at TaxJar, Avalara or Anrok.
One honest note first. AI tax tools help you file faster, but they do not replace a CPA. Tax rules also vary by state. Prices were checked on October 31, 2026, and they change with tax season.
What Is AI Tax Software?
AI tax software is a tool that uses automation and AI helpers to prepare returns, find deductions or calculate sales tax for you.
It comes in three main types:
- Filing tools. They walk you through your income tax return and e-file it.
- Deduction trackers. They scan your bank and card activity to find business write-offs.
- Sales tax tools. They work out the right sales tax on each order and help you file.
The "AI" part is often a chat helper. TurboTax says Intuit Assist gives AI guidance while you file. H&R Block offers AI Tax Assist for questions during filing.
These helpers explain things. They do not take legal responsibility for your return. H&R Block's terms say AI Tax Assist does not prepare your return or give legal advice.
Tax is one part of your money stack. For more, see our hub of AI finance tools.
Quick Comparison: 9 Best AI Tax Software
TurboTax is our top pick overall, followed by H&R Block and TaxAct. Here is how all 9 compare on best use, starting price and integrations. Prices were checked in October 2026 and often scale with users or volume, so confirm before you sign up.
| Tool | Best For | Starting Price | Works With |
|---|---|---|---|
| TurboTax | Self-employed filers who want AI help plus live experts | Expert Assist Business about $229 federal | QuickBooks Online |
| H&R Block | Filers who want free AI Tax Assist and an in-person option | Shown at checkout | IRS and state e-file |
| TaxAct | Budget filers who want a big accuracy guarantee | Self-Employed about $109.99 federal plus $64.99/state | IRS and state e-file |
| FreeTaxUSA | The cheapest way to file Schedule C | $0 federal, about $15.99/state | IRS and state e-file |
| Keeper | Freelancers who want AI deduction tracking and a tax pro filing | Standard about $199/yr | Unlimited bank and card accounts |
| FlyFin | 1099 workers who want AI deduction finding and a CPA | Shown in app | Linked bank and card accounts |
| Avalara | Growing sellers that need sales tax in many states | About $79/mo per state | Shopify, QuickBooks Online, QuickBooks Desktop |
| TaxJar | Online stores that sell across many channels | Starter about $39/mo | Shopify, Amazon, WooCommerce, QuickBooks |
| Anrok | SaaS and AI companies that bill through Stripe | Starter about $100/mo per market | Stripe |
What Makes Great Tax Software?
Great tax software gets your numbers right, files on time and stands behind its math with a clear guarantee.
We weighed seven things:
- Accuracy guarantee. Whether the vendor publishes a promise to cover penalties caused by its errors.
- Self-employed support. Whether it handles Schedule C, 1099 income and self-employment tax.
- Human help. Whether you can reach a tax pro or CPA when the AI is not enough.
- Deduction finding. How well it spots write-offs you might miss.
- State coverage. How it handles state returns or multistate sales tax.
- Integrations. How it connects to your books, bank or store.
- Price clarity. Whether prices are published, and what state fees add.
Your tax return pulls from your books. Our list of the best AI accounting software covers that side.
Best AI Tax Software for Filing Your Return
These four tools are the best tax software for small business owners and freelancers who file their own income tax return.
1. TurboTax: Best for self-employed filers who want AI help plus live experts
TurboTax is Intuit's tax filing software for individuals and small businesses.
What it does well. TurboTax says its do-it-yourself products include AI-powered guidance from Intuit Assist. That gives you plain explanations as you work through your return.
When you want a person, Expert Assist Business adds unlimited help from industry-matched business tax experts. It also includes a final review before you file.
TurboTax publishes a 100% Accurate Calculations Guarantee. If you pay an IRS or state penalty or interest because of a TurboTax calculation error, Intuit says it will pay that penalty and interest. You still owe any extra tax.
Key features:
- Intuit Assist AI guidance while you file
- Premium plan for self-employed and investor taxes
- Expert Assist and Expert Full Service options
- Expert 365 Business, which pairs year-round help with QuickBooks Online
Pricing. Expert Assist Business is about $229 federal for sole proprietors. Expert Full Service Business starts at about $249 federal for sole proprietors. State returns cost extra. Checked October 31, 2026.
Best for: Freelancers and sole proprietors who want AI help and a human safety net.
Limitations. It costs more than most rivals. The DIY plan prices were not listed on the page we checked, so confirm your price at checkout.
2. H&R Block: Best for filers who want free AI Tax Assist and an in-person option
H&R Block sells online, desktop and in-person tax prep across the US.
What it does well. H&R Block says AI Tax Assist is a 24/7 AI helper for questions while you file. It says the helper is included at no extra charge in its Self-Employed online product, along with live tax pro help.
You can also hand your return to a tax pro at an office. That is useful if your first year in business feels messy.
H&R Block publishes a 100% Accuracy Guarantee. Its terms say it reimburses penalties and interest caused by a software or tax pro error. The cap is $10,000 for software users, and conditions apply.
Key features:
- AI Tax Assist for filing questions
- Self-Employed online product with live tax pro help
- In-person tax prep at H&R Block offices
- Published 100% Accuracy Guarantee
Pricing. We could not confirm a current Self-Employed price on a live H&R Block page. H&R Block says prices change, so check the price at checkout. Checked October 31, 2026.
Best for: Filers who want AI help now and an office to visit later.
Limitations. The guarantee has a cap for software users. Its terms say AI Tax Assist is not a substitute for live help.
3. TaxAct: Best for budget filers who want a big accuracy guarantee
TaxAct is a lower-cost online and desktop tax filing service.
What it does well. TaxAct has the largest dollar figure on its guarantee in this group. Its $100k Accuracy Guarantee covers software errors that cause a smaller refund or higher tax bill.
TaxAct says it will refund software fees, pay the difference, and cover penalties, interest and documented legal and audit costs. The total is capped at $100,000 per customer.
Key features:
- Self-Employed plan for freelancers and 1099 income
- Deduction Maximizer tool
- Maximum Refund Guarantee
- $100k Accuracy Guarantee
Pricing. Self-Employed starts at about $109.99 federal plus about $64.99 per state filed. Checked October 31, 2026.
Best for: Self-employed filers who want a strong guarantee at a lower price than TurboTax.
Limitations. The Self-Employed page does not mention an AI assistant. The state fee is high, so add it to your total.
4. FreeTaxUSA: Best for the cheapest way to file Schedule C
FreeTaxUSA is a low-cost online filing service with free federal returns.
What it does well. FreeTaxUSA says federal filing is free, even for complex returns. Its self-employed page lists Schedule C, Schedule SE, 1099-NEC and 1099-MISC as included.
It also says there are no upgrades to file a complex federal return. You pay mainly for state returns and optional support.
FreeTaxUSA publishes an Accuracy Guarantee covering its tax formulas and calculations. Read the full terms on its site.
Key features:
- Free federal filing, including self-employment forms
- Low-cost state returns
- Optional Deluxe Support with live chat
- Optional Pro Support
Pricing. Federal is $0. State returns are about $15.99 each. Deluxe Support is about $7.99 and Pro Support about $64.99. Checked October 31, 2026.
Best for: Simple sole proprietors who know their numbers and want to save money.
Limitations. We found no AI assistant on its pages. You do more of the thinking yourself.
Best AI Tools for Tracking Deductions
These two tools scan your spending all year to find write-offs, then have a tax pro file for you.
5. Keeper: Best for freelancers who want AI deduction tracking and a tax pro filing
Keeper is a bookkeeping and tax filing app for freelancers and small business owners.
What it does well. Keeper links to unlimited bank and card accounts. Its AI finds and sorts possible deductions as they happen.
It can scan receipts and split mixed orders, such as Amazon carts, into business and personal items. On paid filing plans, a tax pro reviews and signs your return.
Key features:
- AI deduction finding and categorizing
- Receipt scanning and custom rules
- Federal and up to 2 state returns on Standard
- Audit protection and quarterly payments on Premium
- S corp and partnership filing on Business
Pricing. Bookkeeping Only is about $20 a month. Standard is about $199 a year. Premium is about $399 a year and Business about $1,199 a year. All plans have a 14-day free trial. Checked October 31, 2026.
Best for: 1099 workers who want write-offs tracked all year.
Limitations. Its pricing page does not mention an accuracy guarantee. It relies on a tax pro review instead.
6. FlyFin: Best for 1099 workers who want AI deduction finding and a CPA
FlyFin is an AI tax app for freelancers and self-employed people.
What it does well. FlyFin scans linked accounts to find deductions. You swipe to accept or reject each one, or ask a CPA.
FlyFin says a CPA prepares your federal and state returns and files them after you review and e-sign. It also lists a quarterly tax estimator and an AI tax assistant for questions.
Key features:
- AI deduction finder for linked accounts
- Swipe-style expense review
- CPA-prepared federal and state returns
- Quarterly tax estimator
- Audit support, per FlyFin
Pricing. FlyFin says exact pricing is always shown in the latest version of its app. We could not confirm a current price on its website. Checked October 31, 2026.
Best for: Freelancers who want a CPA to file without hiring one directly.
Limitations. Its money-back promise covers dissatisfaction, not filing accuracy. Prices are not clear before you sign up.
Best Sales Tax Automation Software
These three tools calculate sales tax on each sale and help you file, so they suit online sellers and SaaS companies.
7. Avalara: Best for growing sellers that need sales tax in many states
Avalara is a large tax compliance company. AvaTax is its sales tax calculation product.
What it does well. Avalara offers prebuilt connectors for Shopify and QuickBooks. Its QuickBooks Online connector calculates tax on each saved transaction.
Avalara says its Shopify app works on all Shopify plans. It also lists QuickBooks Desktop support.
Key features:
- AvaTax sales tax calculation
- Shopify app for all Shopify plans
- QuickBooks Online and QuickBooks Desktop connectors
- Avalara Select bundle for sellers under $50 million in revenue
Pricing. Avalara's July 2026 pricing update lists about $799 per state a year, or about $79 a month. SST-eligible businesses pay about $699 a year or $69 a month. Guided setup costs extra. Checked October 31, 2026.
Best for: Sellers registered in several states that want one big provider.
Limitations. Per-state fees add up fast. Older Avalara pages show different prices, so confirm your quote.
8. TaxJar: Best for online stores that sell across many channels
TaxJar is a sales tax automation tool owned by Stripe.
What it does well. TaxJar pulls in orders from the places you sell. Its own integrations include Shopify, Amazon, WooCommerce, Etsy, eBay, Walmart and QuickBooks.
AutoFile can submit your returns for you. Each plan includes a few free AutoFile credits a year.
Key features:
- Real-time sales tax calculations
- Integrations with Shopify, Amazon, WooCommerce and more
- AutoFile for state returns
- Exemption certificate storage on Professional
- API access on Professional
Pricing. Starter is about $39 a month and Professional about $99 a month at the 200-order tier. Extra AutoFile credits cost about $50 to $55 each. A 30-day free trial is offered. Checked October 31, 2026.
Best for: Ecommerce sellers on several marketplaces.
Limitations. Starter has no API access and only 3 integrations. Price rises with order volume.
9. Anrok: Best for SaaS and AI companies that bill through Stripe
Anrok is a sales tax and VAT platform built for software and digital businesses.
What it does well. Anrok works inside Stripe. Its help center says it supports Stripe Checkout, Invoices, Subscriptions, Quotes and Payment Links.
Anrok also tracks credit notes and voids after invoices finalize. It says it covers more than 150 countries for VAT and GST.
Key features:
- Native Stripe integration
- US sales tax plus global VAT and GST
- Nexus tracking with customer VAT IDs
- Flat fee per market
Pricing. Starter is about $100 per market a month. Ecommerce companies pay about $50 per market. High-volume sellers may pay extra fees. Custom plans are quote only. Checked October 31, 2026.
Best for: Subscription software companies that sell across states and countries.
Limitations. Costs climb as you register in more markets. It is built for digital sales, not physical stores.
How Should You Choose AI Tax Software?
Start with the tax you need help with: your income tax return, your write-offs, or the sales tax you collect.
- You want AI help and live experts: TurboTax or H&R Block.
- You want the biggest published guarantee: TaxAct.
- You want the lowest cost: FreeTaxUSA.
- You want write-offs tracked all year: Keeper or FlyFin.
- You sell on Shopify, Amazon or Etsy: TaxJar.
- You are registered in many states: Avalara.
- You bill software through Stripe: Anrok.
Good books make tax time easy. See the best AI bookkeeping software and the best AI expense management software.
Online sellers should also read our guide to the best AI tools for ecommerce.
How We Evaluated This Tax Software
We built this list from each vendor's official website, pricing page and help center, checked on October 31, 2026.
Tools were ranked on published guarantees, self-employed support, human help, deduction finding, state coverage, integrations and price clarity. This list is not based on filing real returns.
Tax rules vary by state, and prices change during tax season. Confirm prices and guarantee terms with each vendor, and ask a CPA about your own situation.
Can AI Tax Software Replace a CPA?
No. AI tax software can explain rules and catch common mistakes, but it does not replace a CPA's judgment on your specific situation.
AI helpers answer questions from what you type. They cannot see everything about your business. They may miss a state rule, an entity choice or a special credit.
A CPA is worth calling if any of these apply:
- You are thinking about forming an S corp.
- You owe back taxes or got an IRS letter.
- You earn income in more than one state.
- You sold a business, property or a large asset.
Some tools build this in. TurboTax, H&R Block, Keeper and FlyFin all offer human tax pros on some plans.
What Is a Tax Software Accuracy Guarantee?
An accuracy guarantee is a vendor's promise to pay penalties or interest if its own software makes a calculation error on your return.
Here is what each filing tool publishes:
- TurboTax: 100% Accurate Calculations Guarantee. Pays IRS or state penalties and interest caused by a TurboTax calculation error.
- H&R Block: 100% Accuracy Guarantee. Its terms cap it at $10,000 for software users.
- TaxAct: $100k Accuracy Guarantee. Covers fees, the tax difference, penalties, interest and documented legal and audit costs up to $100,000.
- FreeTaxUSA: Accuracy Guarantee on its tax formulas and calculations.
None of these pay the extra tax you owe. They also do not cover mistakes from wrong data you enter. Keeper and FlyFin do not publish a filing accuracy guarantee on the pages we checked.
What Is Sales Tax Automation?
Sales tax automation is software that calculates the right sales tax on each order, tracks where you owe tax, and files your state returns.
It matters because each state sets its own rules. Many cities and counties add their own rates too.
Once you sell enough into a state, you may have "nexus" there. That means you must register, collect and file. Thresholds and rules vary by state, so confirm with each state or your CPA.
The Bottom Line
TurboTax is the best AI tax software for most self-employed people and small businesses, thanks to Intuit Assist guidance, live experts and a clear accuracy guarantee.
H&R Block is a close second with free AI Tax Assist. TaxAct has the biggest published guarantee, and FreeTaxUSA is the cheapest. Keeper and FlyFin track deductions all year, while TaxJar, Avalara and Anrok handle sales tax.
Next steps: Decide which tax you need help with, add up state fees, and read each guarantee. Ask a CPA about anything unusual. For more money tools, visit our hub of AI finance tools.
New to AI in finance?
Our complete guide explains AI for bookkeeping, expenses, payables, payroll, tax and forecasting, and where to start.
Frequently Asked Questions
What is the best AI tax software?
For most self-employed filers, TurboTax is the best pick. It offers Intuit Assist AI guidance, live experts and a 100% Accurate Calculations Guarantee. Expert Assist Business for sole proprietors is about $229 federal.
What is the best tax software for small business on a budget?
FreeTaxUSA is the cheapest in this list. Federal filing is free, including Schedule C, and state returns are about $15.99 each. Prices were checked on October 31, 2026.
Is AI tax preparation safe to use?
It can be, if you check the results. AI helpers explain rules, but they do not replace a CPA. Pick a tool with a published accuracy guarantee and review your return before you file.
Which tax software has the best accuracy guarantee?
TaxAct publishes the largest dollar figure, with its $100k Accuracy Guarantee. TurboTax and H&R Block also publish accuracy guarantees. Read each vendor's terms for limits.
Do I need sales tax automation software?
You likely do if you sell into several states. Tools like TaxJar, Avalara and Anrok calculate tax on each sale and help you file. Rules vary by state, so confirm where you owe tax.
Can Keeper or FlyFin file my taxes?
Yes. Keeper says a tax pro reviews and signs your return on paid filing plans. FlyFin says a CPA prepares and files your federal and state returns after you e-sign.