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Red Dot Investor · Investing Education

Inflation and the Real Return: What Your Number Actually Buys

The Nominal Illusion

Every return on this site's charts is a nominal return - plain price change with the currency itself unexamined. That is how the number is quoted, and it is also the number that misleads. If your portfolio earns 7% in a year while prices rise 3%, you have not gained 7%. You have gained about 4% of actual purchasing power, and the other 3% merely let you tread water.

Inflation does not announce itself in your brokerage app. It shows up in your groceries, your rent, and then - years later - in the realisation that your balance grew while its buying power thinned. The only way to measure investing honestly is real return: nominal return minus inflation.

The Simple Math of Shrinking Money

Take S$10,000. At 3% inflation, that same pile buys about S$7,400 worth of today's goods after ten years. To merely keep its value, every holding must beat inflation before it beats anything else.

The compounding post on this site shows why the distinction compounds too: at 7% nominal with 3% inflation, a 30-year run turns S$10,000 into roughly S$76,000 nominal but only about S$31,000 in today's purchasing power. The headline number is real money eventually spent; the purchasing-power number is what it actually buys. Plan with the second.

Where Inflation Feeds Quietly

Rank the safe-money holdings on this dashboard by how they handle a currency that shrinks:

Who Actually Defends You

The long-run answer to inflation is the part of the portfolio nobody finds exciting: broad equities. Over multi-decade horizons, global equities have historically delivered several percentage points a year above inflation - profits, not coupons, being the engine. That is not a promise for any single year; it is the reason an allocation to stocks is the only component that has historically grown real purchasing power rather than merely preserved it.

Two dashboard mentions with their honest roles:

The Singapore Twist

Two things make the safe tier work harder here than almost anywhere else: SSB and T-bill interest is generally exempt from personal income tax, and CPF's guaranteed rates sit above the cash market. The 2024-25 coupon bonanza - when T-bills opened 2026 at 3% before settling near 1.6% - was the exception, not the norm. In the low mid-1% band of cash yields, 2026 is about preservation, and the honest benchmark is simply beating the current SSB's 10-year average of 2.32%, tax-adjusted.

The Takeaway

Check every holding against real return, not headline return. Keep emergency cash where it belongs - liquid, modest - park the months-ahead money in SSBs, enjoy the CPF float, and put the money you can leave alone in the only thing that has historically out-run inflation: low-cost, broadly diversified equities. Inflation does not need to be forecast; it needs to be out-lasted.

Inflation and yield figures cited as of late 2026; always verify current readings before planning with them.

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