Glossary

Weighted average interest rate

A weighted average interest rate blends the rates on several debts, weighted by their balances, into one figure that reflects your true overall cost of borrowing.

2 min read

BlendedAcross all debts
Balance-weightedBig debts count more

Definition

The weighted average interest rate combines the rates on all your facilities, each weighted by its outstanding balance, into a single number. A £80,000 loan at 8% and a £20,000 loan at 18% give a weighted average of 10%, not 13%, because the larger balance dominates. It is the honest headline cost of a mixed debt stack.

In plain terms

It stops one small, pricey debt or one big, cheap one distorting the picture — it shows what your borrowing actually costs on average.

Why it matters for your company

Track your weighted average rate over time; consolidating a high-rate debt into a lower-rate facility pulls it down. See consolidating business debt to cut interest.

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