5 embeddable calculators
Paycheck, state income tax, retirement tax by state, bonus tax, and tips and overtime. One line of code, kept up to date as we update tax rules. See the embed directory.
For HR teams, publishers, educators and fintech
Work & Money for business
Tested paycheck and tax calculations, checked against official IRS and SSA figures, that you can put in front of your employees, readers or customers: free to embed today, with branded versions and licensing available by arrangement.
What you can use today, free
Data you can cite
Our 2026 retiree state tax study and its CSV are free to reuse under CC BY 4.0. Our other studies and tables are free to cite with a link to the page they came from.
Published accuracy evidence
23 of 23 checks against official IRS and SSA figures match, re-run on every release. See the accuracy checks.
Private by design
Calculators run in the visitor's browser. Nothing they type is sent to you or to us; the embed loads only our page and public data files.
Available by arrangement
For organizations that need more than the free embeds, we're open to discussing:
- Branded calculators. Our calculators in your colors and fonts on your own pages, without the credit link, for example a paycheck or open-enrollment calculator for your employees or members.
- Calculation engine licensing. The same tested engines that power this site (federal withholding, all 50 states and DC, payroll programs, bonus, EITC, Child Tax Credit and more), for use inside your own app or product. Engines are TypeScript with exact decimal arithmetic and yearly versioned rulesets. They produce estimates for illustration and aren't certified for running payroll or making credit decisions.
- Custom data studies. A calculation across every state, income level or household type for a report, story or benefits review, with the method and a CSV.
- A new calculator. If your audience needs a tool we don't have yet, tell us; it may already be on our roadmap.
Terms, pricing and timing depend on what you need, so we agree on them case by case. We don't publish a price list.
Who it's for
- HR, benefits and payroll teams: help employees understand a paycheck, a W-4 change, open enrollment choices or a bonus before they ask.
- Publishers and journalists: interactive tools and state-by-state figures that keep readers on the page.
- Banks, credit unions and fintech apps: take-home pay and tax figures inside budgeting, savings or financial-education flows.
- Financial educators and nonprofits: free tools and printable summaries for workshops and counseling sessions.
What's under the hood
- 84 live calculators and tools, from paychecks and pay stubs to retirement, Medicare and debt.
- Federal rules from official sources: ruleset
us-federal-2026v1.0.0 for tax year 2026, with the next year added as a labeled preview until the IRS publishes it. State income tax rules for all 50 states and DC, including the nine with no tax on wages. - Exact money math: decimal arithmetic, never floating-point, rounding only where the official method does and for display. See our methodology.
- Tested before every release: calculation tests, table integrity checks, build tests and real-browser tests at phone, tablet and desktop sizes.
- Accessible and fast: fast pages that work on phones, tablets and desktops, with labeled forms and the main result announced to screen readers.
Independence
No partner or licensee can change how a calculation works or what it shows on this site or in our embeds. We don't accept payment to rank or recommend employers, products or services, a business arrangement doesn't buy a mention in our guides, and we don't sell links, sponsored mentions or ad placements directly. Any ads are served and chosen by Google AdSense and are labeled. Our editorial standards apply to every tool, branded or not.
Get in touch
Tell us who you are, what you'd like to do, roughly how many people it would reach, and when you need it. We aim to reply within a few business days.