Our sources
Every rule on Taxlumo comes from a primary source: the law itself, IRS forms and instructions, IRS fact sheets and FAQs, revenue procedures, and Treasury regulations. When we cite a secondary source, such as an accounting firm's summary of an IRS update, we say so and link to it. Each page lists its sources at the bottom.
How numbers are checked
- All calculators share one tax engine. Every formula is published on the methodology page.
- The engine must pass a set of automated test cases before any update goes live, including published worked examples from tax software makers.
- Worked examples in our guides are produced by that same engine, so a guide and a calculator never disagree.
How we keep pages current
The new deductions are temporary (2025 through 2028) and the IRS is still issuing guidance. We review the rules whenever the IRS publishes new forms, FAQs or regulations, and at least before each filing season. Each page shows the date it was last updated, and the footer shows when the rules were last checked.
Who writes Taxlumo
Taxlumo is written and maintained by Rogger Taipe, an independent web developer. He isn't a tax professional, so the site relies on primary sources, published formulas and tested examples rather than personal advice.
How we write
We write for workers and retirees, not tax professionals: short sentences, real numbers, and the exceptions that matter. We use software tools, including AI writing assistants, to help draft and review pages. Every figure and rule is checked against the cited source before it's published.
Corrections
If you think something is wrong, email hello@taxlumo.com with the page, the inputs you used and the rule you're comparing it to. We review every report, fix confirmed errors as quickly as we can, and update the page date when we do.
Independence and advertising
Taxlumo is independent. It isn't affiliated with the IRS, the Treasury or any tax software company, and nobody pays to be mentioned. The site is free and supported by ads from Google AdSense. Ads are labeled by Google and kept separate from our content, and advertisers have no say in what we write.
What Taxlumo isn't
Taxlumo gives general estimates of federal income tax. It isn't tax, legal or financial advice, and it can't see your whole situation. Before you file, check the IRS instructions or talk to a tax professional.