The problem a ladder solves
A single long deposit pays a good rate but is all-or-nothing: an unexpected need forces you to break it, usually at a reduced rate plus a penalty on the entire amount. Keeping everything in a short deposit avoids that but gives up rate and forces frequent reinvestment.
A ladder sits between the two. With, say, five deposits maturing a year apart, one twentieth of your money is never more than twelve months away, while the rest continues at longer-tenure rates.
Building one
Divide the amount into equal parts and place them across staggered tenures — one, two, three, four and five years is the classic shape. As each deposit matures, either use the cash or reinvest it at the longest rung. After the first cycle you own only long-tenure deposits, but one matures every year.
- Choose rung spacing to match when you actually expect to need money.
- Compare maturity values across rungs before committing, since rates differ by tenure.
- Avoid over-splitting: too many tiny deposits create admin work for little benefit.
Tax and rate realities
Deposit interest is taxable at your slab rate and banks deduct tax at source above the applicable threshold, so a maturity figure from a calculator is a pre-tax number. Also remember that a ladder does not beat a single deposit on rate alone — its value is liquidity and reinvestment flexibility, which matters most when rates are moving.
When a recurring deposit fits better
A ladder assumes you already hold a lump sum. If you are building savings from monthly surplus instead, a recurring deposit does the accumulating and you can ladder later, once there is a corpus to split.