About Calcora
Calcora publishes free, transparent US finance calculators. Every tool is built on data sourced directly from the IRS, state revenue authorities, the Social Security Administration, and the Federal Reserve.
Who is behind Calcora
Hassan Ahmed is the founder of Calcora. He is a software developer who builds and maintains the site, including the calculators and the tax data behind them. He sources every tax figure from primary documents: the IRS Revenue Procedure for the tax year, the Social Security Administration's wage base determination, and each state's department of revenue, and records the source and verification date next to the figure.
He is not a licensed tax advisor, CPA, enrolled agent or attorney, and nothing on Calcora is individual tax advice. Content published under the Calcora Editorial Team byline is researched, built and reviewed under the process described on that page, which he leads. Corrections and questions reach him through the contact page.
Our approach
Most online calculators are black boxes: you input numbers, get a result, and have to trust it. We take the opposite approach: every calculator shows the bracket math step by step, cites the official source, and displays a "last verified" date so you can see exactly when the underlying data was checked.
What we cover
Today's live tools include US tax and income (paycheck by state, federal income tax, 1099 self-employment tax, capital gains, salary to hourly), loans (mortgage with PITI, auto loan), investing (compound interest, 401(k) with employer match), and a few general utilities (percentage, discount, age). We add calculators over time; the site and blog describe only what is actually published.
How Calcora is funded
The site is free for readers. We plan to support hosting and updates through responsible display advertising (for example Google AdSense) and, where clearly disclosed, occasional affiliate links that never change our calculator math.
Editorial standards
We do not accept payment for favorable calculator results, biased recommendations, or content placement. Affiliate relationships, where they exist, are disclosed clearly on the relevant pages and never affect the math or the conclusions of our calculators.
Not financial advice
Calcora provides educational tools and information. We are not a registered investment advisor, tax preparer, or law firm. For decisions affecting your finances, consult a licensed CPA, CFP, or attorney.