Variable Rate.

In plain English

A variable rate, sometimes called an adjustable rate, moves up and down over the life of a loan or account as an underlying benchmark changes. Credit cards, HELOCs, some private student loans, and adjustable-rate mortgages use them. When the benchmark rises, your rate and payment climb; when it falls, they ease. Variable rates often start lower than fixed rates, which is the tradeoff: you may pay less at first but you carry the risk that the rate rises later.

01Why it matters

A variable rate can make a loan cheaper at first but leaves you exposed if rates climb, so knowing which kind you have tells you whether your payment can jump.

02The math, step by step

Your HELOC has a variable rate tied to a benchmark. When the Fed raises rates, your benchmark rises too, and your monthly interest charge goes up even though you borrowed the same amount.

03What this is NOT