Prime Rate Calculator

Calculate loan payments based on the Prime Rate, the benchmark interest rate banks charge their most creditworthy customers.

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Important Financial Disclaimer

This calculator provides estimates based on standard financial formulas from verified references. Results are for informational and educational purposes only and should not be considered as professional financial, investment, or tax advice.

For important financial decisions such as loans, investments, mortgages, retirement planning, or tax matters, please consult with qualified financial advisors, certified financial planners, or licensed tax professionals who can review your specific situation.

Calculations may not account for all variables specific to your circumstances, local regulations, or current market conditions. Always verify results and consult professionals before making financial commitments.

Not a substitute for professional financial advice

Loan Details

$
%
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years
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Prime Rate is typically 3% above the Federal Funds Rate. Most consumer loans (HELOCs, credit cards) are priced relative to Prime.

Your Interest Rate

8.50%

Prime (8.5%) + 0%

Monthly Payment
$5,129.13
Interest Only
$1,770.83

Cost Analysis

Annual Interest Cost$21,250.00
Total Interest (5 years)$57,747.97
Total Payments$307,747.97

Rate Analysis

Expected Prime (Fed + 3%)8.50%
Prime vs Expected+0.00%
If Prime Rises 0.25%+$30.18/mo

Common Prime-Based Products

  • - Home Equity Lines of Credit (HELOCs)
  • - Credit Cards (Prime + 10-15%)
  • - Business Lines of Credit
  • - Small Business Loans
  • - Adjustable Rate Mortgages (some)
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sources

  • Reserve Bank of India (RBI) — Financial regulations, lending rates, and monetary policy guidelines. rbi.org.in
  • Consumer Financial Protection Bureau (CFPB) — Consumer finance guidelines, mortgage and loan disclosure standards. consumerfinance.gov
  • Securities and Exchange Board of India (SEBI) — Investment and securities market regulations. sebi.gov.in
  • Investopedia — Financial formulas, definitions, and educational content. investopedia.com

For a complete list of all references used across the site, visit our full sources page.

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Editorial Note

MyCalcBuddy Editorial Team

This page is maintained as an educational calculator reference.

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Formula Source: Fundamentals of Financial Management

by Brigham & Houston

🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.