What is a Blended Rate Calculator and How Does It Work?
A blended rate calculator is an essential tool for finance professionals, HR managers, and homeowners to calculate weighted averages. Our blended rate calculator 2026 answers the critical question: "what is my blended rate?" Whether you need to calculate weighted average interest rate for multiple loans, determine blended overtime rate for FLSA compliance, or compare mortgage refinancing options, this tool provides accurate results.
How does the weighted average interest rate calculator work? Enter each rate and its corresponding amount. The blended rate formula is simple: (Rate₁×Amount₁ + Rate₂×Amount₂) ÷ Total Amount. For overtime, the blended overtime rate is (Regular Pay + Overtime Pay + Bonus) ÷ Total Hours. For mortgages, the blended mortgage rate is (Existing Balance × Existing Rate + New Loan × New Rate) ÷ Total Balance.
Blended Rate Formula and Examples
Interest Rates: Blended Rate = (Rate₁×Amount₁ + Rate₂×Amount₂ + Rate₃×Amount₃) ÷ Total Amount. Example: $10,000 at 5% and $20,000 at 7% = (10,000×0.05 + 20,000×0.07) ÷ 30,000 = 6.33%.
Overtime (FLSA): Blended Rate = (Regular Pay + Overtime Pay + Bonus) ÷ Total Hours. Example: 40 hours at $25 ($1,000) + 10 hours at $37.50 ($375) = $1,375 ÷ 50 = $27.50/hour.
Mortgage Refinancing: Blended Rate = (Existing Balance × Existing Rate + New Loan × New Rate) ÷ Total Balance. Example: $250,000 at 4.5% + $100,000 at 3.2% = 4.13%.
Why Blended Rate Matters for Debt Consolidation
Before consolidating multiple debts, you must calculate your current blended rate. If the consolidation loan offers a rate lower than your blended rate, you save money. If higher, you lose. For example, if your blended rate is 8.5% and consolidation offers 7.0%, you save 1.5% on your total balance. On $50,000, that's $750 in annual savings.
Blended Overtime Rate: FLSA Compliance
The Fair Labor Standards Act (FLSA) requires employers to use a blended rate when calculating overtime for employees who work at multiple hourly rates. Total weekly compensation divided by total hours worked equals the regular rate. Overtime is paid at 1.5× that blended rate for hours over 40.
Blended Mortgage Rate for Refinancing
When refinancing with a HELOC or second mortgage, your true blended rate is the weighted average of your existing mortgage and the new loan. Use our calculator to find your true blended rate before accepting any refinance offer.