CPF Top-Up: RSTU vs Voluntary Contribution Singapore

RSTU tops up directly to your RA (or SA if below 55), or to a family member’s RA/SA/MA. Earns 4% p.a. SA/RA interest rate. Tax relief: up to S,000/year for own accounts + S,000/year for family members = S6,000 maximum cash top-up tax relief. Voluntary contributions (VC) split across OA/SA/MA proportionally — OA earns 2.5% but can be used for hou

For informational purposes only. Not financial advice.

Table of Contents

  1. RSTU vs Voluntary Contribution: What’s the Difference?
  2. Which Method Maximises Tax Relief?
  3. Timing and Strategic Considerations
  4. How to Make CPF Top-Ups in 2026
  5. Frequently Asked Questions

RSTU vs Voluntary Contribution: What’s the Difference?

RSTU tops up directly to your RA (or SA if below 55), or to a family member’s RA/SA/MA. Earns 4% p.a. SA/RA interest rate. Tax relief: up to S,000/year for own accounts + S,000/year for family members = S6,000 maximum cash top-up tax relief. Voluntary contributions (VC) split across OA/SA/MA proportionally — OA earns 2.5% but can be used for housing, education, and CPFIS investing.

Which Method Maximises Tax Relief?

Most Singapore taxpayers should: (1) Claim full S,000 RSTU for themselves, (2) Claim S,000 RSTU for eligible parents or spouse, (3) Consider MA voluntary top-up for MediSave to BHS (S1,500 in 2026). Example: professional earning S50,000 topping up S6,000 total via RSTU saves approximately S,600–S,200 in income tax depending on marginal rate.

Timing and Strategic Considerations

Below 55: RSTU top-ups go to Special Account (4% p.a.). At 55+: top-ups go to Retirement Account (4% floor). Deadline: all top-ups by 31 December for that year’s tax relief. Caps: RSTU capped at FRS (S13,000) minus current SA/RA balance. For ERS track (S26,000), capped at ERS minus current balance. No top-ups allowed once ERS is reached.

How to Make CPF Top-Ups in 2026

Via CPF Board e-Cashier: log in to cpf.gov.sg with Singpass → Grow My Savings → Cash Top-up → Retirement Sum Topping-Up Scheme. Pay via PayNow, GIRO, or eNETS. Tax relief is automatically reported to IRAS — appears in your Notice of Assessment the following year. No need to declare separately in your tax return.

Related Tools & Guides

What is the difference between CPF RSTU and voluntary contributions?
RSTU top-ups go directly to SA or RA for retirement (earning 4% p.a.) and qualify for up to S6,000 in annual tax relief. Voluntary contributions are split across OA/SA/MA — OA funds remain more accessible for housing and investment.
How much tax relief can I get from CPF top-ups in 2026?
Up to S,000 for cash top-ups to your own CPF RA/SA/MA, plus S,000 for eligible family members. Maximum CPF cash top-up tax relief is S6,000 per year.
When is the deadline for CPF top-ups to qualify for tax relief?
All CPF top-ups must be made by 31 December of the tax year to qualify for that year’s income tax relief.
Can I top up a family member's CPF and get tax relief?
Yes. Under RSTU, you can top up a parent, grandparent, spouse, or sibling’s CPF SA/RA and claim up to S,000 in additional tax relief.
Is there a cap on how much I can top up via RSTU?
Top-ups are capped at the difference between FRS (S13,000 in 2026) and the recipient’s current SA/RA balance. Once ERS (S26,000) is reached, no further top-ups are allowed.

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