Precision financial tools
for every milestone.
Plan smarter with fast, mathematically rigorous tools engineered for real-world tax laws, mortgages, retirement, and business finances. 100% private, instant, and calculated entirely inside your browser.
100% Private
Runs in your browser
Instant Results
Zero forms or sign-up
Multi-Region
US, UK, CA & Global
30+ Calculators
Tested for accuracy
SmartCalcLabs is an independent, free, and privacy-first financial modeling platform providing 34+ instant calculators for mortgages, income taxes, retirement planning, investments, and business costs. Engineered for households and professionals in the United States, Canada, the United Kingdom, and Australia, all calculations execute 100% locally inside your browser with zero server data storage and no commercial affiliate bias.
Most Popular Financial Tools
Zero friction, 100% private. Run simulations instantly without sign-up.
What People Are Saying
From homebuyers to freelancers — real people, real decisions.
"I was pricing out a new location and needed quick break-even numbers. SmartCalcLabs gave me a cleaner answer in 30 seconds than my accountant did in a spreadsheet."
Sarah Jenkins
Small Business Owner, Denver CO
"Used the mortgage tool while literally standing in a house I was touring. No sign-up, no pop-ups — just the numbers I needed right then."
Michael Chang
First-time Homebuyer, Austin TX
"The self-employment tax estimator is what I was missing. I'd been overpaying quarterly for two years before I finally figured out my actual obligation."
David Rodriguez
Freelance Developer
"I tested three different calculators before landing here. This one doesn't try to sell me anything, and the math actually checks out against my brokerage statements."
Emily Watson
Index Fund Investor
From the Blog
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All Financial Tools
Every calculator, organized by topic. Free, instant, no account needed.
Investing & Wealth
Investment ROI Calculator
Enter your cost and gain — see your annualized return and to…
Net Worth Calculator
Add up everything you own, subtract everything you owe. See …
Inflation Impact Calculator
See how much $10,000 today will actually be worth in 10, 20,…
Dividend Income Calculator
Enter your portfolio size and yield — see your projected mon…
Currency Purchasing Power Calculator
A dollar today won't be a dollar in 10 years. See exactly ho…
Budgeting & Savings
50/30/20 Budget Planner Calculator
Plug in your take-home pay. We'll show you where the 50/30/2…
Emergency Fund Calculator
Three months or six? Find the target number based on your ac…
Savings Goal Calculator
Have a target amount and a deadline? We'll calculate exactly…
Child Education Cost Planner Calculator
College is expensive — and getting more so. Find out how muc…
Debt & Loans
Tax, Business & Freelance
Self-Employment Tax Calculator
Freelancers pay both halves of FICA. Find out what you actua…
Break-Even Analysis Calculator
How many units until you're profitable? Enter your fixed cos…
Business Profit Margin Calculator
Revenue minus costs tells one story. Gross and net margin te…
Freelancer Tax Estimator Calculator
Working across borders? Estimate your self-employment taxes …
Freelancer Hourly Rate Calculator
Stop guessing what to charge. Factor in taxes, unpaid days, …
Etsy Fee Calculator
Calculate your true profit margin after listing, transaction…
Real Estate
Retirement
RMD Calculator
Turning 73? Calculate your IRS Required Minimum Distribution…
Inherited IRA RMD Calculator
Calculate your Required Minimum Distribution (RMD) for an in…
401(k) RMD Calculator
Calculate your 401(k) Required Minimum Distribution. Find ou…
QCD Calculator
Calculate the tax savings of a Qualified Charitable Distribu…
Backdoor Roth IRA Calculator
High earner? Check whether you qualify and estimate the tax …
Solo 401(k) Contribution Calculator
Self-employed and want to max your retirement savings? See t…
RRSP vs TFSA (Canada) Calculator
Tax-deferred or tax-free — which account wins for your brack…
RRSP Calculator (Canada)
Calculate your 2026 CRA tax refund, 18% contribution room li…
TFSA Calculator (Canada)
Track your cumulative lifetime TFSA room ($102k in 2026) and…
UK Pension Drawdown Calculator
How long will your pension pot last? Model it against your w…
2026 Statutory Financial Benchmarks & Caps
Official regulatory thresholds calibrated across our US, UK, and Canadian calculators
| Jurisdiction | Financial Regulation / Threshold | 2026 Statutory Limit | Governing Authority |
|---|---|---|---|
| United States | Social Security (OASDI) Wage Base Cap | $184,500 (12.4% FICA) | Social Security Administration |
| United States | 401(k) / 403(b) Employee Elective Deferral | $23,500 ($31,000 age 50+) | Internal Revenue Service (IRS) |
| United States | SECURE 2.0 RMD Mandatory Age | Age 73 (born 1951–59) / 75 (1960+) | IRC § 401(a)(9) Table III |
| Canada | RRSP Annual Contribution Limit Ceiling | $32,490 (or 18% earned income) | Canada Revenue Agency (CRA) |
| Canada | TFSA Cumulative Lifetime Limit | $102,000 ($7,000 annual in 2026) | Canada Revenue Agency (CRA) |
| United Kingdom | Pension Tax-Free Lump Sum (PCLS) | 25% (up to £268,275 LSA cap) | HM Revenue & Customs (HMRC) |
Frequently Asked Questions About SmartCalcLabs
Clear, authoritative answers about our privacy model, calculation accuracy, and platform policies.