About Tallivo

What Tallivo is

Tallivo is an independent project building free calculators for the money decisions that actually matter — mortgages, paychecks, taxes, loans, debt payoff, investing, and crypto. There's no signup, no paywall, and the tools run entirely in your browser.

Accuracy is the product

A calculator is only worth using if it's right. Every tool is built on a documented formula and unit-tested against known values, and every page that uses tax or rate data cites its public sources and states the tax year. Our tax figures come from the IRS (Rev. Proc. 2024-40 for 2025), the SSA for payroll wage bases, and other primary sources — never scraped or guessed.

Each calculator links to a methodology page that spells out the exact formula, the assumptions, and the limitations. If we can't show our work, we don't publish the tool.

How it stays current

Tax brackets, deductions, and payroll rates are stored as versioned data with an explicit tax year, so annual updates are a data change with a clear audit trail. Pages that rely on this data are stamped with the year they apply to.

Not financial advice

Tallivo provides general informational estimates only. It is not a licensed financial, tax, or legal advisor, and its calculators are planning tools — not a substitute for professional advice tailored to your situation. See the full disclaimer.

Independent & ad-supported

Tallivo is free to use and supported by advertising, plus affiliate partnerships on a small number of clearly-labeled tools (such as crypto-tax software). Those partnerships never change a calculator's math or which result it shows.

Questions, corrections, or ideas? Get in touch.