Blended Rate FAQs — Everything You Need to Know

A blended rate is the single weighted average interest rate that represents the combined cost of two or more loans. It is calculated by multiplying each loan's balance by its rate, summing those products, and dividing by the total balance.

A simple average treats every loan equally regardless of size. A blended rate weights each loan by its outstanding balance. For example, a $300,000 loan at 6% and a $10,000 loan at 10% gives a simple average of 8%, but a blended rate of 6.13% — because the larger loan dominates.

Calculate it whenever you want to compare your current aggregate debt cost against a new loan offer: before refinancing, before consolidating debts, when evaluating a cash-out refinance, or when reporting your borrowing cost to an advisor.

No. APR (Annual Percentage Rate) is a regulatory disclosure for a single loan that includes fees and points. Blended rate is a calculation you perform yourself across multiple loans using only stated interest rates. Use APR to evaluate a new loan; use blended rate to understand what you currently pay.

No. The blended rate uses stated interest rates only. For a cost-inclusive comparison, you need the APR on each loan.

Use today's current rate. Variable-rate products like HELOCs and ARMs change periodically — recalculate your blended rate after each rate reset. For stress-testing, run the calculation once with today's rate and once with the rate cap.

Yes. Enter each student loan as a separate tranche with its balance and rate. The calculator handles up to four loans. If you have more, group your two smallest by balance using a simple rate average.

There is no universal benchmark — it depends on loan types and market conditions. A blended rate below the current 30-year fixed mortgage rate suggests your aggregate cost is reasonable. Using a blended rate savings calculator can help determine if refinancing is worth it. Significantly above that level signals that consolidation might help.

To calculate a blended rate, multiply each loan balance by its interest rate, add those results together, and then divide the sum by the total loan balance. You can use our blended interest rate calculator to do this automatically.

The blended rate calculation formula is: ((Loan 1 Balance × Rate 1) + (Loan 2 Balance × Rate 2)) / (Total Balance). This same blend rate calculator formula applies whether you have two loans or ten.

Calculating a blended rate involves finding the weighted average of your interest rates based on their balances. The easiest way to calculate blended interest rate is to input your loan amounts and rates into our blended rates calculator. If you are wondering how do you calculate a blended rate manually, it simply follows the formula above.

A blended interest rate calculation is simply the math used to determine the weighted average cost of multiple debts.

To learn how to calculate a blended interest rate, you must know the balance and rate of each individual loan.

Simply plug your loan balances and rates into our tool to learn how to calculate blended interest rate accurately.

Calculating blended rate manually requires you to follow the weighted average formula. But using a rate blend calculator is much faster.