The short answer: no tax software handles every situation. What matters is what it does when it reaches its limits. If your return includes something Navo doesn't support yet, Navo tells you early and plainly, instead of guessing.
That might sound like a strange thing to brag about. Here's why we think it's one of the most important things Navo does.
Why guessing is the worst option
A tax program that tries to handle a situation it wasn't built for can produce a return that looks finished but is wrong. You might not find out until the IRS sends a letter months later. By then you've already filed, and fixing it means an amended return, and possibly a bill with interest and penalties.
A wrong return is worse than no return. If a tool tells you up front that it can't handle your situation, you've lost a few minutes. If it quietly gets your return wrong, you can lose much more.
What a quiet mistake looks like
Imagine you sold a rental property this year, and your tax program doesn't fully handle the sale. A careless program might skip part of the calculation and still show you a confident refund amount. Everything looks fine. Then, a year later, the IRS matches the sale against what you reported and sends a notice for tax you didn't know you owed, plus interest.
The fix isn't to make the screen look more confident. It's to be honest about what the program can and can't do.
Why AI makes this easier to miss
A chatbot will almost always give you an answer, delivered with confidence, whether or not it's right. It rarely says "I don't know." In public tests, even the best AI models still get a meaningful share of returns wrong, and they don't flag which ones. Read what the tests found.
That's why Navo's tax engine, not AI, decides your numbers, and why the engine only calculates what it's been built and tested to calculate. Why Navo never lets AI do the math.
What Navo does instead
It asks about your situation early
Before you've typed in every form, Navo asks a few questions about your year to check whether your return includes anything it can't handle yet. You find out in the first few minutes, not after an hour of data entry.
It tells you plainly
If something is out of scope, Navo says what it is, in plain language, so you're not left wondering. It doesn't send you in circles or hide the reason.
It doesn't make up numbers
Navo's tax engine only calculates what it's been built and tested to calculate. Every situation it supports runs against test returns whenever the engine changes.
It points you somewhere useful
If Navo can't do your return, it tells you so you can file another way, and the guide below lists free options.
What Navo covers
Navo handles most common returns, including:
- Wages, tips and overtime, and the new 2026 deductions
- Interest and dividends
- Self-employment and gig income, with business expenses
- Selling stocks and other investments
- Rental income
- Retirement income and IRA contributions
- Itemized deductions
See the full list of what Navo covers.
What Navo doesn't cover yet
Some situations aren't supported yet, such as income earned outside the US. The coverage page always has the current list. We're adding more each year, starting with the ones our filers ask for most.
When Navo can't do your return
If Navo can't handle your situation, it will tell you before you've done the work. You still have good options:
- Other free software. IRS Free File partners, if your income is under the IRS's limit, and Free File Fillable Forms at any income. See free ways to file.
- Free help in person. IRS-certified volunteers at VITA and TCE sites prepare returns free for many people.
- A tax professional. For complicated situations, like a business with employees or income earned outside the US, a qualified preparer is often worth it.
Frequently asked questions
Why not just support everything? Every situation we support has to be built, checked against the IRS's rules and tested. We'd rather cover fewer situations correctly than more of them badly. We add more every year.
Will Navo tell me if something changes partway through? If you add a form or answer a question that brings your return outside what Navo supports, Navo tells you at that point.
I'm not sure whether my situation is covered. What should I do? Check the coverage page, or start your return: Navo's first questions will tell you.
Related guides
- Why Navo never lets AI do the math
- Can ChatGPT, Claude or Gemini do your taxes?
- Free ways to file your taxes
This post is general information, not tax advice for your situation.