Building a retirement corpus

Retirement is the goal with the longest runway most people ever plan for, and that length is exactly what makes it plannable. This article is about the mechanism — how a corpus turns into an income, and how the mix often changes along the way. It uses no return figures on purpose; the arithmetic belongs in the retirement calculator, and the retirement planning page is the place to start a plan.

What a retirement corpus is for

You are not building a lump sum for its own sake; you are building something that can pay you an income once the salary stops. So the honest starting point is the monthly income you would want in today’s money, and the size of pot that could reasonably provide it. Working from the income you want back to the corpus behind it is what the calculator does; the point here is that the income, not the number, is the real target.

Two phases: building it, then drawing it

A retirement plan has two halves. In the accumulation phase, while you are earning, you add to the pot and let it grow. In the drawdown phase, after you stop, you take an income from it while the rest stays invested — the mechanism a systematic withdrawal plan describes. The plan has to serve both halves, which is why the mix cannot stay the same throughout.

Why the long runway is the advantage

Because retirement is usually decades away when you start, time can do the heavy lifting through compounding, and the long horizon is what lets the money ride out equity’s swings in the early years. A goal this far off can carry more growth-oriented assets than a near-term one — the runway is the whole reason it can.

Why the mix shifts as you approach

The allocation is not fixed for life. Early on, a mostly-owning mix makes sense because there is time to recover a fall. As you near retirement and begin drawing on the pot, a steep fall can no longer be waited out, and selling into a downturn to fund your income does lasting damage — the sequence in which returns arrive starts to matter, not just their average. So the mix de-risks over time, tilting steadier as the date approaches and through the early drawdown years.

Inflation does not retire when you do

A retirement can last a long time, and inflation keeps working the whole way through it: an income that felt ample at the start buys less each year if it never grows. That is why a retirement corpus usually keeps some growth in it rather than sitting entirely in cash — it has to keep pace with rising prices across a drawdown that may run for decades, not just preserve a number.

Working out your numbers

Every figure here is deliberately left out, because a return is an assumption, not a fact. To turn a wanted income into a corpus and a monthly investment, use the retirement calculator — an illustration on your own inputs, not a projection — and the retirement page to frame the plan. H2 Investment is a distributor, not an adviser: this explains how the mechanism works, and does not tell you what to buy.