How does TurboTax calculate my estimated tax payments?

Based on your 2025 tax info, we’ll use the lower of the following IRS-approved methods to calculate your estimated tax payments.

• 90% of your estimated 2026 taxes
• 100% of your actual 2025 taxes (110% if your adjusted gross income was higher than $150,000, or $75,000 if Married Filing Separately)

There are two additional IRS-approved methods available:

• 100% of your estimated 2026 taxes
• 66 2/3% of your estimated 2026 taxes (farmers and fishermen only)

If you’d like to use one of the additional methods, answer Yes to the question Do you want to adjust your income or deduction? on the Review Your Estimates for 2026 screen. Once you review your income and deductions, you’ll have the option to select from any of the four methods.