Personal Finance Calculators
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Master your money with our personal finance calculators. Build your emergency fund, compare debt payoff strategies, estimate side hustle taxes, and plan for retirement. Designed for real-life scenarios and easy to use.

Embed These Calculators
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Add the calculators to your own website with a simple iframe. Use full-page embed or jump directly to a specific tool via a hash anchor. Adjust height as needed.

Full page embed:

<iframe src="https://strtly.com/calculators/personal-finance/?embed=1" width="100%" height="900" style="border:0;max-width:100%"></iframe>
<div style="text-align:right;font:400 12px/1.4 system-ui;margin-top:4px">Calculator by <a href="https://strtly.com/calculators/personal-finance/" target="_blank" rel="noopener">Strtly</a></div>

Per-calculator embeds:

<!-- Emergency Fund -->
<iframe src="https://strtly.com/calculators/personal-finance/?embed=1#emergency-fund-calculator" width="100%" height="680" style="border:0;max-width:100%"></iframe>
<div style="text-align:right;font:400 12px/1.4 system-ui;margin-top:4px">Calculator by <a href="https://strtly.com/calculators/personal-finance/" target="_blank" rel="noopener">Strtly</a></div>

<!-- Debt Avalanche vs Snowball -->
<iframe src="https://strtly.com/calculators/personal-finance/?embed=1#debt-avalanche-vs-snowball-calculator" width="100%" height="720" style="border:0;max-width:100%"></iframe>
<div style="text-align:right;font:400 12px/1.4 system-ui;margin-top:4px">Calculator by <a href="https://strtly.com/calculators/personal-finance/" target="_blank" rel="noopener">Strtly</a></div>

<!-- Side Hustle Income Tax -->
<iframe src="https://strtly.com/calculators/personal-finance/?embed=1#side-hustle-income-tax-calculator" width="100%" height="640" style="border:0;max-width:100%"></iframe>
<div style="text-align:right;font:400 12px/1.4 system-ui;margin-top:4px">Calculator by <a href="https://strtly.com/calculators/personal-finance/" target="_blank" rel="noopener">Strtly</a></div>

<!-- Retirement Catch-Up Contribution -->
<iframe src="https://strtly.com/calculators/personal-finance/?embed=1#retirement-catch-up-contribution-calculator" width="100%" height="700" style="border:0;max-width:100%"></iframe>
<div style="text-align:right;font:400 12px/1.4 system-ui;margin-top:4px">Calculator by <a href="https://strtly.com/calculators/personal-finance/" target="_blank" rel="noopener">Strtly</a></div>

Emergency Fund Calculator
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Monthly Living Expenses ($):

Months to Cover:

Debt Avalanche vs Snowball Calculator
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Debt 1 Balance ($):

Debt 1 Rate (%):

Debt 2 Balance ($):

Debt 2 Rate (%):

Extra Monthly Payment ($):

Compare debt avalanche vs snowball methods to see which pays off your debt faster and saves more on interest. Great for credit cards, student loans, and personal loans. Use this calculator for "debt payoff strategy" and "avalanche vs snowball" searches.

Side Hustle Income Tax Calculator
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Side Hustle Income ($):

Estimated Tax Rate (%):

Estimate your side hustle income tax for freelance, gig, or self-employment work. Use this calculator for "side hustle tax calculator", "self-employment tax", and "freelance tax estimate" searches.

Retirement Catch-Up Contribution Calculator
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Current Age:

Current Retirement Balance ($):

Annual Contribution ($):

Years to Retirement:

Expected Annual Growth (%):

See how catch-up contributions can boost your retirement savings if you're 50 or older. Use this calculator for "retirement catch-up calculator", "401k catch-up", and "IRA catch-up contribution" searches.