Finance category
Mortgage, loan, investing, tax, and money calculators.
Blended Interest Rate Calculator
Carrying multiple loans at different rates? The blended rate tells you the effective cost of your overall debt. Useful for consolidation decisions, payoff priority, and whether a single refinance beats current structure.
Enter each loan's balance and rate. The calculator computes the balance-weighted blended rate.
Blended rate
7.08%
Total balance
$383,000
Monthly interest (rough)
$2,259
How to Use
- Enter each loan's label, balance, and rate.
- Add more rows for additional loans.
- Read the weighted blended rate and monthly interest estimate.
Frequently Asked Questions
How is the blended rate calculated?
Sum of (balance × rate) divided by sum of balances. A $300k mortgage at 7% plus $30k HELOC at 10% blends to 7.27%, not 8.5% — because the mortgage dominates the weighting.
When is this useful?
Consolidation decisions. If a new single loan has a rate below your blended rate, refinancing all debt into it may save money. Also useful as a reality check on marginal debt analysis.
Should I include credit cards?
Yes if they carry balances. But credit card rates are often 3-5x higher than installment loans, so they heavily skew the weighted rate and often dominate payoff priority.
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