An estimate is a starting point, not a guaranteed number
These apps are useful for getting a quick sense of whether you're likely owed a refund without digging through tax records yourself, but the figure shown is an estimate based on the data available to the app at that moment. Missing deductions, unreported income, or data that hasn't synced yet can all shift the actual amount once you file for real.
This is general information, not tax advice
Rules for freelance withholding tax, what counts as a deductible expense, and how refunds are processed vary significantly by country and change over time. Treat a refund-estimator app as a convenient first check, and confirm your actual filing obligations and figures with your national tax authority or a qualified tax professional before relying on the number.
Frequently Asked Questions
Is checking my estimated refund free?
Checking the estimate is typically free on these apps, though actually filing to claim the refund -- whether through the app's paid filing service or on your own -- is usually a separate step with its own cost or effort.
Why might the actual refund differ from the app's estimate?
The estimate is only as good as the data linked at the time, so unreported income, deductions you haven't entered, or updates to your tax records after the check can all change the final amount once you actually file.