CPF Cash Top-Up Tax Relief in Singapore: Your Questions Answered

Updated 5 Oct 2026 in Tax & GST

These are the questions people ask most often about cpf cash top-up tax relief. Each answer is short; follow the links for the full detail.

What does a cpf cash top-up tax relief calculation tell me?

Estimates the tax saved from Retirement Sum Topping-Up: up to S$8,000 for yourself and S$8,000 for family members.

What is the formula?

Tax saved = tax(chargeable income) − tax(chargeable income − relief).

What do I need to enter?

Chargeable income before top-up (S$), Cash top-up qualifying for relief (S$).

Is this the same as my IRAS bill?

It is an estimate based on the published rates. Your notice of assessment will reflect all reliefs, rebates and income IRAS holds for you.

Can you show an example?

For example, with these inputs:

the calculator returns:

Any tips?

Background

Reliefs lower chargeable income before rates apply. Common ones include earned income relief, CPF relief for employee contributions, parent and handicapped parent relief, working mother's child relief, NSman relief, course fees relief, and relief for SRS contributions and CPF cash top-ups. Total personal reliefs are capped at S$80,000 a year.

IRAS issues a notice of assessment, usually from April onwards, and tax is due within a month, although most people opt for interest-free GIRO instalments. Estimating your bill early means you can budget for it instead of being surprised.

The Goods and Services Tax rose from 8% to 9% on 1 January 2024. Businesses with taxable turnover above S$1 million must register, and GST-registered retailers must quote prices to consumers inclusive of GST, so most shelf prices already include it.

Related calculations

Try it yourself with the CPF Cash Top-Up Tax Relief Calculator.

Run your own numbers: CPF Cash Top-Up Tax Relief Calculator

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