CalcFi

CalcFi is a free, no-signup financial decision platform with 312+ calculators that cross-check mortgage, paycheck, debt, and retirement numbers against each other using live IRS, Federal Reserve, Treasury, SSA, and BLS data.

What is CalcFi?

CalcFi is a browser-based tool that takes personal financial inputs—like income, mortgage payment, debt balance, and retirement savings—and outputs cross-checked projections showing how one decision shifts the others. All calculations run locally in the user's browser; no data is sent to servers. The platform is maintained by an unlisted team and funded by optional ads.

Key Features

• Cross-check calculations — Adjust a mortgage payment and watch your retirement on-track date move in real time. The sample shows a $200 monthly increase delaying retirement by 14 months.
• No signup or ads — Access all calculators instantly without creating an account. No paywalls or email walls.
• Live federal data — Rates and brackets refresh hourly from the IRS, Fed, Treasury, BLS, and SSA. Every formula cites its source inline.
• Private ledger — Save numbers to your browser's IndexedDB; CalcFi never sees them. Snapshots update automatically when federal data changes.
• PDF reports — Every calculator offers a free PDF with results, charts, and next steps delivered by email within a minute.
• Spanish-language calculators — Over 96 calculators available at calcfi.app/es.
• Guided journeys — Step-by-step paths for scenarios like home buying, job loss, tax filing, and debt payoff.

Who is it for?

• Homebuyers — See if a mortgage payment fits your budget and how it affects retirement timing.
• Gig workers and freelancers — Calculate quarterly taxes, mileage deductions, and take-home pay after self-employment taxes.
• Retirement planners — Check whether you're on track and what number you need, with cross-checks from other decisions.
• Debt payers — Compare avalanche vs. snowball payoff methods and see the impact on monthly cash flow.

What can you do with CalcFi?

• Home buyer: Input a house price, down payment, and interest rate to get the monthly payment (including PMI and taxes), then see how that payment shifts your retirement on-track date.
• Job leaver: Run a runway calculator to see how long your cash lasts after a layoff, and adjust assumptions to see what changes.
• Tax filer: Estimate your refund or amount owed using current year brackets and rates, then save the results for next year.
• Retirement planner: Enter current savings, contribution rate, and target date to get a probability-based on-track projection, cross-checked with your other financial commitments.

How does CalcFi work?

1. Choose a calculator or guided journey from the homepage or search bar.
2. Enter your numbers (income, debts, savings) directly in your browser. No account needed.
3. See real-time results with cross-checks to other saved calculations.
4. Save snapshots locally or generate a PDF report by email. Tax data updates automatically each year.

FAQ

Is CalcFi free?

Yes—100% free, forever. No signup, no paywalls. Optional ads fund the service, never users.

Are the calculations accurate?

Every formula cites its exact IRS, Fed, Treasury, SSA, or BLS source inline. Results are educational; for legal filing, cross-check with a CPA or tax software.

Does CalcFi store my data?

No. Calculations run in your browser. Inputs are never sent to servers. Local snapshots are stored in your browser only.

How many calculators are there?

346, spanning mortgage, tax, retirement, debt, investing, insurance, career, and more. See the full index at /calculators.

Is there a Spanish version?

Yes—96+ calculators are available in Spanish at calcfi.app/es.

How often is tax data updated?

Tax brackets, FICA limits, and IRS thresholds are refreshed every tax year. All calculators currently reflect the 2026 tax year.