No tax site calculates a larger refund than another — they all use your numbers to reach the same result

The refund amount you receive depends entirely on what you enter into the tax form itself: your income, deductions, credits, and withholdings. TurboTax, H&R Block, TaxAct, FreeTaxUSA, and the IRS Free File tools all follow the same tax code and produce the same refund if you enter the same information into each one. A site cannot give you a bigger refund by being better or smarter — the math is the math.

What changes between sites is not the refund size but what you pay to file, how much hand-holding you get, and how thoroughly each one catches deductions or credits you might miss. A site that finds a deduction you overlooked does not create a larger refund; it reveals one that was always yours. The difference in what you owe to file can range from free to over $200.

Key Takeaways

  • All tax software uses the same IRS tax code, so the refund amount will be identical across TurboTax, H&R Block, TaxAct, and free options if you enter the same information.
  • A site that catches a deduction or credit you missed does not create a bigger refund — it helps you claim money the tax code already allowed you.
  • The real difference between sites is filing cost (free to $200+) and how thoroughly the software walks you through less common deductions and credits.
  • The IRS Free File program and FreeTaxUSA offer no-cost filing for most people, producing the same refund as paid software.
  • If you have a simple return, any free option will calculate your refund correctly; if you have rental income, self-employment, or multiple credits, a more thorough tool may catch something you would miss.

How the math stays the same across every platform

Tax software is not a calculator that can be better or worse at math — it is a form-filling tool that applies the tax code you give it. The IRS publishes the tax brackets, standard deduction amounts, credit formulas, and phase-out rules every year. TurboTax and FreeTaxUSA both use those same published rules. If you enter $50,000 in income and claim the standard deduction, every platform will calculate the same tax owed and the same refund.

The only way a site produces a different refund is if you enter different information into it. That might happen because one site's interface makes it easier to remember a deduction, or because one site asks more questions and surfaces something you forgot. But the software itself is not doing anything the others cannot do.

Where sites actually differ: thoroughness and cost

The real gap between tax sites shows up in three places. First, filing cost: the IRS Free File program and FreeTaxUSA charge nothing. TurboTax's basic version costs around $120 for federal return only (prices vary by year). H&R Block's online version starts around $100. If your return is simple, paying anything is unnecessary.

Second, how many questions the software asks. A thorough tool will walk you through education credits, energy credits, dependent care, adoption credits, and other less common deductions. A simpler tool might ask fewer questions and miss something. If you have rental property, self-employment income, or multiple children, a more detailed interview can catch deductions a basic tool would skip — not because the basic tool is wrong, but because it does not ask.

Third, what happens if you make a mistake. Some paid versions offer audit support or a may provide that if the software made an error, they will cover the cost. Free tools typically do not. This matters only if something goes wrong.

When a more thorough tool actually changes your refund

Suppose you have a child in college and you do not know about the American Opportunity Tax Credit. A basic free tool might not ask about education expenses. A more thorough tool will ask, you will enter the tuition you paid, and the software will calculate a credit worth up to $2,500. Your refund is now larger — but not because the site is better at math. The credit was always there; you just did not know to claim it.

The same applies to energy-efficient home improvements, dependent care costs, or self-employment deductions. The tax code allows these. A tool that asks about them helps you claim what is yours. A tool that does not ask leaves money on the table, but that is a failure to surface the question, not a failure to calculate.

For this reason, if you have a straightforward W-2 job, no dependents, and no side income, any free tool will produce the correct refund. If you have rental income, self-employment, multiple children, education expenses, or significant charitable giving, a more thorough tool is worth using — not for a bigger refund, but to make sure you do not miss one.

Free options that produce the same refund as paid software

The IRS Free File program partners with companies including TurboTax, H&R Block, TaxAct, and others to offer their software at no cost to people earning below a certain threshold (usually around $73,000, though this varies by year). If you meet the income limit, you can use the full version of these platforms for free and get the same refund calculation as someone who paid.

FreeTaxUSA is a separate option that charges nothing for federal returns regardless of income. It is less well-known than the brand names but produces the same refund if you enter the same information. Some people use it specifically to compare their refund against what another site calculated, as a sanity check.

The IRS also offers VITA (Volunteer Income Tax Assistance), a free in-person service run by trained volunteers at libraries, community centers, and nonprofits. VITA sites use the same tax code and produce the same refund as any software.

Why you might see different refund amounts when testing sites

If you enter your information into TurboTax and then into FreeTaxUSA and see different refund amounts, the difference is almost always in what you entered, not in the sites themselves. Common reasons include:

  • One site asked about a deduction or credit the other did not, and you answered differently or forgot to enter it the second time.
  • You entered a number differently — $5,000 instead of $50,000, or forgot to include a form from your employer.
  • One site has a bug or has not updated for a recent tax law change (rare, but it happens in the first weeks of tax season).
  • You used different filing status or claimed different dependents.

If you see a real difference, go back and check your entries line by line. The refund should match once you use the same information in both places.

What to do if you want to maximize your refund

Maximizing your refund means claiming every deduction and credit the tax code allows you. This has nothing to do with which site you use and everything to do with knowing what you spent money on. Before you file, gather records of:

  • Charitable donations (cash and goods).
  • Medical expenses above the threshold.
  • Education costs (tuition, books, student loan interest).
  • Dependent care or childcare costs.
  • Home office expenses if you are self-employed.
  • Business mileage or vehicle expenses.
  • Property taxes paid.

Once you have that list, use a tool that asks about all of these — either a thorough paid version or the full IRS Free File version of a major platform. The tool will guide you through claiming what you have. That is how you get the refund you are may have access to to, not by switching sites.

Frequently Asked Questions

Can I file with multiple sites to see which gives me the biggest refund?

You can, but you will see the same refund if you enter the same information. The only reason to try multiple sites is to make sure you did not miss a deduction — use the more thorough one as a checklist. Never file the same return twice with different sites; file only once with the IRS.

Does TurboTax find deductions that FreeTaxUSA misses?

Not inherently. Both use the same tax code. TurboTax may ask more questions because it is a paid product with more detailed interviews, which can surface deductions you forgot about. If you use FreeTaxUSA and answer every question thoroughly, you will reach the same refund. The difference is in how much hand-holding you get, not in the math.

What if I file with one site and then realize I missed a deduction?

You cannot amend a return you have already filed. Instead, file an amended return (Form 1040-X) once you realize the mistake. You can file the amended return with any site or by mail. The IRS will recalculate and send you the additional refund if you claimed something you missed.

Is there a tax site that catches more credits than others?

No site has access to information you do not have. What matters is whether the software asks you about credits you might not know exist — education credits, energy credits, adoption credits, and others. Paid versions with longer interviews tend to ask more questions. If you want to be thorough, look up the IRS Publication 17 or use the IRS Interactive Tax Assistant to see which credits you might be missing, then enter them into whichever site you choose.

Should I pay for tax software if a free option exists?

Only if your return is complex enough that you want professional support or audit protection, or if you value the more detailed interview process. For a simple W-2 return with the standard deduction, free software produces the correct refund. For rental income, self-employment, or multiple credits, a more thorough tool may help you avoid mistakes, but that is about thoroughness, not about getting a bigger refund.