About TaxGuide Pro
TaxGuide Pro is a free library of federal and state tax calculators built for planning before filing. The tools turn published IRS and state guidance into browser-based estimates for refunds, withholding, self-employment tax, credits, deductions, and state-specific questions.
Every calculator page is designed to show its assumptions, cite source material, and explain common caveats. The result is planning guidance, not a filed return or a substitute for professional tax advice.
We prioritize clear state coverage, including states with no broad-based wage income tax, so taxpayers can confirm when a state income-tax result should be zero and what other taxes may still matter.
How the calculators are built
Each calculator starts with a defined planning question and a limited set of inputs. The calculation logic is mapped to published tax brackets, thresholds, phaseouts, contribution limits, or state rules. Pages identify the tax year, describe the formula in plain language, and link to the IRS, Treasury, Social Security Administration, or state revenue source used for verification.
We test representative cases, boundary values, filing statuses, and zero-income or maximum-limit scenarios. When official figures are not yet published for a future planning year, the page should say which current-year value is being carried forward instead of presenting an unconfirmed number as final.
What TaxGuide Pro covers
The library covers federal filing basics, withholding, deductions, credits, self-employment, investing, retirement, housing, IRS notices, international tax planning, and twelve common state-tax workflows for every state.
What it does not replace
A calculator cannot determine every election, local tax, multi-state allocation, business-entity issue, or fact on a complete return. Confirm material decisions with official instructions or a qualified professional who can review your full circumstances.
TaxGuide Pro is designed for private, browser-based exploration without requiring an account for ordinary calculator use. Results should be treated as working estimates that help users ask better questions, organize records, and identify the official rule that needs confirmation before a tax decision.