Federal Tax Reference Calculators
Explore selected 2025 and 2026 federal formulas in your browser. For complete-return questions, use the linked primary IRS resources.
Educational estimates only: These tools do not prepare a return or evaluate every eligibility rule. Confirm the tax year and result with the applicable IRS form and a qualified tax professional before filing.
Built and maintained by Jason Ramirez, self-taught web builder and founder of Your Friendly Developer LLC. He is not a CPA, enrolled agent, or tax attorney. See the methodology and limitations.
Tax Calculators and Official IRS Resources
On-site calculators cover only the years and formulas described in each card. Cards marked IRS open primary guidance for complex calculations that are not currently estimated by TaxBreakTools.
Federal Income Tax Calculator
Estimate basic 2025 or 2026 ordinary federal income tax after the base standard or an entered itemized deduction. Credits and other taxes are excluded.
IRS Refund and Withholding Estimator ↗
Use the official IRS estimator for a household-level refund, balance-due, paycheck, or withholding estimate.
Qualified Tips Deduction Calculator
Estimate the 2025 qualified-tips deduction and income phaseout. Confirm occupation, reporting, SSN, and filing-status eligibility.
Qualified Overtime Deduction Calculator
Estimate the 2025 deduction for the FLSA-required overtime premium portion. Not all overtime compensation qualifies.
Senior Tax Deduction Calculator
Estimate the 2025 Schedule 1-A enhanced senior deduction, including its income phaseout. Other age-based additions are excluded.
Tax Bracket Calculator
See your 2025 or 2026 federal tax bracket with a visual breakdown of your marginal and effective tax rates.
Self-Employment Tax Calculator
Estimate 2025 or 2026 Schedule SE tax and its deductible employer-equivalent portion. Income tax, QBI, and payments are excluded.
IRS Paycheck Withholding Estimator ↗
Use the official IRS estimator for federal withholding. Your employer and state determine other paycheck deductions.
Official 2025 Schedule 1-A ↗
Review the IRS form that combines the enacted tips, overtime, car-loan-interest, and senior deductions on a 2025 return.
IRS Capital Gains and Losses Instructions ↗
Use the official Schedule D instructions for basis, holding periods, loss netting, special rates, and related taxes.
IRS Child Tax Credit Instructions ↗
Use Schedule 8812 and its worksheets because usable and refundable credits depend on tax liability and household details.
SALT Deduction Calculator
Estimate the deductible 2025 state-and-local-tax amount and compare entered Schedule A deductions with the standard deduction.
Car Loan Interest Deduction Calculator
Estimate the 2025 Schedule 1-A deduction for eligible new personal-use vehicle loan interest and its income phaseout.
IRS Form W-4 Estimator ↗
Use the official IRS household estimator before changing federal withholding on Form W-4.
IRS Estimated Tax Resources ↗
Use Form 1040-ES and Publication 505 for quarterly payments, safe-harbor rules, and current due dates.
Property Tax Arithmetic
Apply a local rate you supply to an assessed value after entered exemptions. No state average or local rate is assumed.
Questions about scope
What do the supported tax calculators calculate?
Each supported calculator applies one stated federal formula for the tax year selected in that tool. Results do not assemble a complete return and may exclude credits, other taxes, elections, household facts, state rules, and eligibility tests.
Why do some tool links open an IRS resource?
Refund, withholding, estimated-tax, credit, capital-gain, and all-in-one return questions require facts and worksheets the retired site calculators did not model reliably. Those paths temporarily route to the applicable IRS estimator, form, instructions, or publication.
When should I use a tax professional?
Use a reference calculator to understand a narrow published formula. Consult a CPA, enrolled agent, or tax attorney for filing decisions, notices, entity choices, multi-state issues, complex investments, major life changes, or any result you are not confident applying.
How are 2025 return rules kept separate from 2026 planning?
Every supported calculator identifies its tax year. Year-specific brackets, standard deductions, and Social Security wage bases are versioned; 2025-only Schedule 1-A and Schedule A tools do not silently substitute 2026 planning figures.