Last reviewed: May 2026 | Next review: January 2027 | Reading time: 8 min
Key Takeaways
- Self-employed CPF: MediSave is mandatory (if NTI > $6,000/year), OA and SA are voluntary
- MediSave contribution: 4% to 10.5% of Net Trade Income depending on your age and NTI, up to $7,680–$10,080 a year
- Most freelancers discover this at tax time — 12–18 months after going solo
- Voluntary SA top-ups earn 4% guaranteed + qualify for $8,000/year tax relief
- Without voluntary contributions, your CPF LIFE payout at 65 could be zero
Nobody told you this when you went freelance.
When you left your salaried job, your CPF contributions dropped to zero. No employer, no mandatory deductions, more cash in hand. It felt like a raise.
But here's what the CPF booklet doesn't make obvious: as a self-employed person, you still owe CPF. Just not the part you're thinking of.
Every self-employed Singaporean with Net Trade Income above $6,000/year must make annual MediSave contributions. And many freelancers only discover this when they file their taxes for the first time — and get hit with a bill they weren't expecting.
This article explains what you owe, what you don't, and why voluntarily putting money into CPF is one of the best financial moves a freelancer can make.
The Core Rule: What's Mandatory for Self-Employed
| Account | Mandatory? | Notes |
|---|---|---|
| MediSave (MA) | Yes — if NTI ≥ $6,001 | Assessed annually when you file income tax |
| Ordinary Account (OA) | No | Voluntary only |
| Special Account (SA) | No | Voluntary only |
This is the key difference from employment: there is no employer paying CPF on your behalf. You are the employer. And as the employer, you've essentially opted out of OA and SA by choosing self-employment — but the MediSave obligation follows you regardless.
The MediSave Contribution Table for Self-Employed
MediSave is payable only if your Net Trade Income for the year is above $6,000. The rate depends on both your NTI and your age — your age as at 1 January of the year the income was earned.
| Net Trade Income | Below 35 | 35 to below 45 | 45 to below 50 | 50 and above |
|---|---|---|---|---|
| Above $6,000 to $12,000 | 4.00% | 4.50% | 5.00% | 5.25% |
| Above $12,000 to $18,000 | Phased in from 4.00% to 8.00% | Phased in from 4.50% to 9.00% | Phased in from 5.00% to 10.00% | Phased in from 5.25% to 10.50% |
| Above $18,000 | 8.00% (maximum $7,680) |
9.00% (maximum $8,640) |
10.00% (maximum $9,600) |
10.50% (maximum $10,080) |
Rates apply to Net Trade Income, which excludes net earnings from platform work declared to CPF Board by a platform operator. Between $12,000 and $18,000 the rate is phased in: Below 35: [480 + 0.16 × (NTI − 12,000)] × 100 / NTI. 35 to below 45: [540 + 0.18 × (NTI − 12,000)] × 100 / NTI. 45 to below 50: [600 + 0.2 × (NTI − 12,000)] × 100 / NTI. 50 and above: [630 + 0.21 × (NTI − 12,000)] × 100 / NTI.
Pensioners contribute at the same rates up to $12,000 of NTI, then at a flat 6.00% above $18,000, capped at $5,760 a year.
Source: CPF Board, MediSave Contribution Rates for Self-Employed Persons, applicable for 2026 (Table 1 non-pensioners, Table 2 pensioners).
There is also an account cap: once your MediSave account reaches the Basic Healthcare Sum (BHS): $79,000 (2026), mandatory contributions stop. If your MA is already at the BHS, you owe nothing — even with high NTI.
Calculate your exact CPF contributions based on your salary, age and citizenship status.
Open the Free CPF Calculator →Uncle Lim's Real Numbers
Uncle Lim runs an IT consultancy. NTI this year: $80,000.
Mandatory MediSave contribution:
At 40 he is in the “35 to below 45” band, and NTI above $18,000 attracts the full rate of 9%.
Mandatory MediSave contribution: $7,200 for the year (9% of $80,000, below the $8,640 maximum for his age band).
This is paid once per year, assessed after Uncle Lim files his income tax. IRAS and CPF Board communicate automatically — Uncle Lim gets notified of his MediSave obligation during tax season (typically June/July).
If Uncle Lim forgets to budget for this: he'll face a payment demand in June/July that catches most first-year freelancers cold. Plan for it.
⚠️ Important: The Freelancer's Tax-Season Surprise
Many freelancers only discover their MediSave obligation when they receive their tax assessment — often 12–18 months after their first year of self-employment.
By then:
- They've spent the "extra cash" from not having CPF deducted
- They face a lump-sum MediSave payment demand
- For high earners the annual bill tops out at $7,680–$10,080 depending on age, due in a single paymentWhat to do: From your first month of self-employment, set aside your age band’s rate — at most 10.5% — of your monthly invoicing into a separate account. Use it to pay your MediSave assessment. Anything left over is genuinely yours.
Why Voluntary Contributions Still Make Sense
Just because OA and SA are optional doesn't mean they're a bad idea.
Here's what voluntary CPF contributions give Uncle Lim:
1. Compounding at 4%
SA earns 4% guaranteed. No stock market risk. No currency exposure. No management fee. For a freelancer who wants a reliable baseline retirement fund, this is hard to beat.
2. Tax Deductions
Cash top-ups to SA/RA and MA are tax-deductible under the RSTU scheme:
- Top up your own SA/RA: up to $8,000/year in tax relief
- Top up a family member's SA/RA: additional $8,000/year in tax relief
Uncle Lim's NTI: $80,000. Marginal tax rate at that level: approximately 11.5%. If he tops up $8,000 to SA, he saves ~$920 in tax and the $8,000 earns 4% in SA. Effective yield factoring in tax savings is well above 4%.
3. CPF LIFE Eligibility
CPF LIFE payouts require a minimum RA balance at age 65. Freelancers who only make mandatory MediSave contributions may have very little in OA/SA and therefore a very small RA at 55 — leading to minimal or zero CPF LIFE payouts.
Voluntarily building SA throughout your freelance career is the fix.
The Retirement Gap: Two Versions of Uncle Lim at 65
Let's project two scenarios for Uncle Lim (now 40, NTI $80,000/year through to 65):
Version A: Only mandatory MediSave contributions
- OA: $0 accumulated (no voluntary contributions)
- SA: $0 accumulated
- MA: Maxes out at the BHS ($79,000) in his late forties given $7,200/year contributions
- RA at 55: minimal (SA was empty, OA was empty — nothing to sweep into RA)
- CPF LIFE payout at 65: minimal or zero
Version B: Mandatory MediSave + $500/month voluntary SA top-up
- $500/month = $6,000/year into SA
- At 4% compounding over 25 years (40 to 65): ~$256,000 in SA by 55
- RA at 55: significant balance swept from SA (up to FRS of $220,400)
- CPF LIFE monthly payout: ~ $1,780/month from age 65
The difference between $0/month and $500/month voluntary contribution can be the difference between a comfortable CPF LIFE payout and nothing at all.
Model Uncle Lim's numbers → cpfcalculatorsg.com/calculator.html
What Counts as Net Trade Income?
NTI is your self-employment income after allowable business expenses — but it is not the same as your taxable income after personal deductions.
Allowable deductions (reduce NTI):
- Staff costs, office rent, equipment depreciation
- Professional fees (accounting, legal)
- Business-related travel
- Software subscriptions, tools, supplies
Not deductible against NTI:
- Personal income tax reliefs (CPF relief, NSman relief, parent relief)
- These come later in the income tax calculation, not at the NTI stage
Your NTI is the figure IRAS uses to calculate your MediSave obligation and pass to CPF Board.
On the employment side of a mixed income, the company pays its own CPF share on your salary and nothing at all on your self-employed earnings. The employer CPF contribution rates page has what that share is, by age, for 2026 and 2027.
Mixed Employment/Self-Employment Income
Some people are employed part-time or on contract while also doing freelance work.
If you have both employment income and self-employment income:
- CPF contributions (employee + employer) are made normally on the employment income
- MediSave contributions are assessed on your NTI from self-employment separately
- The two are calculated independently
However: if you've already hit the Annual CPF Contribution Limit ($37,740 for 2026) through your employment, your MediSave obligation from self-employment may be reduced or waived. CPF Board calculates this automatically when you file taxes.
Do I Need to Register with CPF Board as Self-Employed?
In most cases, no separate registration is needed. If you're a Singapore Citizen or PR doing self-employed work, IRAS and CPF Board share information automatically when you declare NTI in your income tax return.
The process:
1. File your income tax return via myTax Portal, declaring your NTI
2. IRAS passes the NTI figure to CPF Board
3. CPF Board issues your MediSave contribution notice (typically June/July)
4. You pay through the CPF portal or GIRO
No separate step required. Just make sure you're accurately declaring your NTI.
Voluntary Contributions: How to Set Them Up
Making voluntary CPF contributions is straightforward:
- Log in to my.cpf.gov.sg with Singpass
- Go to My Requests → Building Up My / My Recipient's CPF Savings
- Choose Cash Top-Up if you want the RSTU tax relief (top up to SA or RA)
- Or choose Voluntary Contribution to contribute to your CPF accounts in the standard allocation proportions
- Set up a monthly GIRO if you want automated contributions
For cash top-ups specifically targeting tax relief (RSTU scheme), use the Top-Up to SA/RA option. This is distinct from the general voluntary contribution — only RSTU top-ups generate the tax deduction.
See your numbers before committing → cpfcalculatorsg.com/calculator.html
The Tax Relief Math: Why $8,000/Year Matters
At Uncle Lim's income level ($80,000 NTI), his marginal tax rate is approximately 11.5%.
If he tops up $8,000 to SA this year:
- Tax savings: $8,000 × 11.5% = $920 cash back
- SA balance increase: $8,000 earning 4% = $320/year interest (first year)
- Net cost after tax relief: $8,000 - $920 = $7,080
For $7,080 out of pocket, Uncle Lim gets:
- $8,000 in SA earning 4% guaranteed
- $320/year compounding interest
- Stronger CPF LIFE foundation
Effective yield: well above 4% when tax savings are factored in. This is one of the best risk-free returns available in Singapore.
Planning for Retirement as a Freelancer
If you're freelancing long-term, here's a sustainable approach:
1. Budget for mandatory MediSave from Day 1
- Set aside up to 10.5% of monthly revenue in a separate account
- Pay the annual assessment without stress
2. Start voluntary SA top-ups early
- Even $300–$500/month compounds significantly over 20+ years
- Claim the $8,000/year RSTU tax relief every year
3. Don't neglect housing
- If you plan to buy HDB/condo, keep some voluntary contributions going to OA
- OA is needed for downpayments and mortgage repayments
4. Check your CPF balance quarterly
- Log into my.cpf.gov.sg every 3 months
- Track your OA, SA, and MA growth
- Adjust voluntary contributions as your income changes
5. At age 50, review your FRS gap
- Check how much you need to reach the Full Retirement Sum ($220,400 for 2026)
- Increase voluntary top-ups if needed in the final 5 years before 55
Frequently Asked Questions
Do I need to register with CPF Board as a self-employed person?
Generally no. Declaring your net trade income in your tax return notifies CPF Board, and your MediSave payable is worked out from it. There is no separate registration step for most self-employed Singaporeans.
What if I earn less than $6,000 of net trade income?
Then no mandatory MediSave contribution is due. The obligation only arises where net trade income exceeds $6,000 for the year. You can still contribute voluntarily.
My MediSave is already at the Basic Healthcare Sum. Do I still owe contributions?
No. Once MediSave reaches the Basic Healthcare Sum — $79,000 in 2026 — mandatory contributions for the year stop. You can still make voluntary contributions to your Ordinary or Special Account.
Can I claim tax relief on voluntary top-ups to my own SA?
Yes. Cash top-ups to the Special Account below 55, or the Retirement Account from 55, qualify for relief of up to $8,000 a year under RSTU. Use the cash top-up function in the CPF portal, not a general voluntary contribution, or it will not be recognised as one.
What if I have both employment income and self-employment income?
CPF is payable normally on the employment income, and your net trade income is assessed separately for MediSave. If employment has already used the $102,000 CPF Annual Limit for the year, the MediSave payable on your self-employment income is reduced or removed.
Can I use voluntary CPF contributions for housing?
Voluntary contributions that land in the Ordinary Account can be used for a downpayment or instalments on the same terms as mandatory ones. Money in the Special Account cannot be used for housing.
What happens if I do not pay my mandatory MediSave contribution?
CPF Board will pursue it. Non-payment is a compliance matter and can carry penalties and enforcement action — it is an obligation, not an option.
I am self-employed and planning to retire at 55. Will I get CPF LIFE?
CPF LIFE depends on having a Retirement Account balance, and mandatory self-employed contributions go only to MediSave. Without voluntary top-ups to the Special or Retirement Account there may be little or nothing to annuitise, so those top-ups are the whole retirement plan for a self-employed member.
Can I contribute once a year instead of monthly?
Yes. You can contribute monthly, quarterly or as a single lump sum. The $8,000 RSTU relief cap is annual, so one lump sum in December is worth exactly what twelve monthly ones are.
Does my mandatory MediSave contribution count toward the RSTU relief cap?
No. A mandatory contribution is an obligation, not a voluntary top-up, and earns no relief. Only voluntary cash top-ups count toward the $8,000 a year.
Your Self-Employed CPF Checklist
- [ ] Set aside up to 10.5% of monthly revenue for the annual MediSave obligation
- [ ] Declare NTI accurately in your income tax return (IRAS myTax Portal)
- [ ] Pay MediSave contribution notice when received (typically June/July)
- [ ] Start voluntary SA top-ups — even $300/month makes a difference
- [ ] Claim $8,000/year RSTU tax relief on voluntary SA/RA top-ups
- [ ] Check CPF balance quarterly at my.cpf.gov.sg
- [ ] Review retirement gap at age 50 and increase contributions if needed
Calculate your voluntary contribution impact → cpfcalculatorsg.com/calculator.html
Know a friend who just went freelance and has no idea about MediSave contributions? Share this before they get their first tax assessment surprise.
Written by the team at CPF Calculator SG. Figures based on CPF Board and IRAS policies effective January 2026. For the authoritative source, visit cpf.gov.sg. This article is for general information only and does not constitute financial advice. Next review: January 2027.