How to Tax Your Prop Firm Profits in Singapore

Key Takeaways

Overview

Singapore is often celebrated as a low-tax haven, and for good reason — the country has no capital gains tax, a maximum personal income tax rate of 24%, and a business-friendly regulatory environment that has attracted global talent and capital for decades. However, prop firm traders face a crucial classification challenge: despite the absence of capital gains tax, the Inland Revenue Authority of Singapore (IRAS) would very likely classify systematic prop trading as a trade or business, making the payouts fully taxable as trade income rather than tax-free capital gains.

The distinction between a "trader" and an "investor" is the single most important tax determination for prop firm participants in Singapore. IRAS applies what are colloquially known as the "badges of trade" — a set of criteria including frequency of transactions, holding period, profit motive, and systematic approach. Active prop firm traders tick virtually every box: they trade frequently, hold positions for short periods, are motivated entirely by profit, and approach trading as an organized business activity. The fact that they use the prop firm's capital (not their own) further reinforces the service/business classification rather than the investment classification.

Once classified as trade income, Singapore's progressive rates from 0% (on the first SGD 20,000) to 24% (on income above SGD 1,000,000) apply. While these rates are substantially lower than most European and North American jurisdictions, they are higher than the 0% that many newcomers expect when they hear "Singapore has no capital gains tax." The effective rate for most prop traders will fall between 10% and 20% — still very competitive globally, but not zero.

How Prop Firm Income Is Classified

The Badges of Trade

IRAS uses the "badges of trade" framework (derived from UK tax law) to distinguish between taxable trading and tax-free investment gains:

Badge	Investor (Tax-Free)	Trader (Taxable)	Prop Trader
Frequency	Infrequent transactions	Regular, frequent transactions	✅ Daily/weekly
Holding period	Long-term holding	Short-term	✅ Minutes to days
Profit motive	Mixed (dividend/growth)	Primary motive is profit	✅ Sole motive
Systematic approach	Passive	Organized, business-like	✅ Highly systematic
Subject matter	Investments generating income	Items not naturally income-producing	✅ Trading instruments
Financing	Own capital, long-term	Borrowed/leveraged/others' capital	✅ Prop firm's capital

Prop firm traders satisfy virtually every badge of trade, making business income classification near-certain.

Trade Income vs. Investment Income

• Trade income: Fully taxable at progressive personal rates. Allows deduction of business expenses. May trigger CPF/MediSave obligations.
• Investment income (capital gains): Tax-free in Singapore. No expense deductions available.

The irony is that the expense deduction benefit of trade income classification partially offsets the tax liability, but the 0% vs. 24% maximum rate difference means investment classification would always be preferable — if it were available.

No Specific IRAS Guidance

IRAS has not issued a specific ruling on prop firm income. The classification analysis above is based on general principles from IRAS's existing guidance on trading versus investment activities (IRAS e-Tax Guide: "Tax Treatment of Gains from Sale of Shares and Financial Instruments").

Tax Rates and Brackets

Progressive Personal Income Tax (Year of Assessment 2026)

Chargeable Income (SGD)	Rate
$0 – $20,000	0%
$20,001 – $30,000	2%
$30,001 – $40,000	3.5%
$40,001 – $80,000	7%
$80,001 – $120,000	11.5%
$120,001 – $160,000	15%
$160,001 – $200,000	18%
$200,001 – $240,000	19%
$240,001 – $280,000	19.5%
$280,001 – $320,000	20%
$320,001 – $500,000	22%
$500,001 – $1,000,000	23%
Above $1,000,000	24%

The SGD 20,000 tax-free threshold (~USD 15,000) and the gradual rate progression make Singapore particularly attractive for emerging and mid-level prop traders.

Detailed Example Calculations

Example 1: Emerging Trader

Trader earning SGD 80,000/year (~USD 60,000) with SGD 10,000 in expenses:

• Chargeable income: SGD 70,000
• Tax: $0 + $200 + $350 + $2,100 = SGD 2,650
• Effective rate: 3.8%

Example 2: Established Trader

Trader earning SGD 200,000/year (~USD 150,000) with SGD 20,000 in expenses:

• Chargeable income: SGD 180,000
• Tax: $0 + $200 + $350 + $2,800 + $4,600 + $6,000 + $3,600 = SGD 17,550
• Effective rate: 9.8%

Example 3: High-Income Trader

Trader earning SGD 500,000/year (~USD 375,000) with SGD 40,000 in expenses:

• Chargeable income: SGD 460,000
• Tax: approximately SGD 67,350
• Effective rate: 14.6%

Example 4: Top-Tier Trader

Trader earning SGD 1,500,000/year (~USD 1,125,000) with SGD 80,000 in expenses:

• Chargeable income: SGD 1,420,000
• Tax: approximately SGD 282,900
• Effective rate: 19.9%

Even at the highest income levels, Singapore's effective rate rarely exceeds 20% — compared to 50%+ in most European countries.

CPF and MediSave

For Singapore Citizens and Permanent Residents

Self-employed Singapore Citizens and PRs have specific CPF (Central Provident Fund) and MediSave obligations:

Mandatory MediSave Contributions

• Self-employed individuals earning annual net trade income above SGD 6,000 must contribute to MediSave (the medical savings component of CPF)
• Contribution rate: tiered, approximately 8–10.5% of net trade income, capped
• Maximum annual MediSave contribution: approximately SGD 6,510 (2026)
• MediSave funds can be used for hospitalization, approved outpatient treatments, and health insurance premiums

Voluntary CPF Contributions

• Self-employed can make voluntary contributions to the Ordinary Account and Special Account
• Voluntary contributions qualify for tax relief
• Annual CPF relief cap: SGD 37,740 (mandatory + voluntary combined)

For Foreigners/Employment Pass Holders

Foreigners are generally exempt from CPF obligations:

• No mandatory MediSave contributions
• No employer or employee CPF contributions
• This makes Singapore even more cost-effective for foreign prop traders
• However, foreigners should arrange private health insurance

GST (Goods and Services Tax)

Current Rate and Registration

• GST rate: 9% (increased from 8% on January 1, 2024)
• Registration threshold: SGD 1,000,000 annual taxable turnover
• Below the threshold, GST registration is voluntary

Impact on Prop Traders

• Most individual prop traders will not reach the SGD 1M threshold
• Services supplied to overseas entities are generally zero-rated (0% GST) under Section 21(3) of the GST Act
• If voluntarily registered, traders can claim input GST credits on Singapore business expenses
• For most prop traders, GST registration is unnecessary and adds compliance burden without benefit

Deductible Expenses

Singapore tax law allows deduction of expenses "wholly and exclusively incurred in the production of income" (Section 14 of the Income Tax Act):

Fully Deductible

• Challenge and reset fees — all payments to prop firms
• Trading platform subscriptions — TradingView, MetaTrader, trading journals
• VPS hosting — virtual private servers
• Accounting fees — tax preparation and compliance
• Professional education — trading courses, seminars (must relate to current trade)
• Insurance — business-related insurance

Proportionally Deductible

• Internet — business-use proportion
• Home office — Singapore does not have a formal home office deduction system, but reasonable claims for dedicated workspace costs are accepted
• Computer equipment — can be expensed under Section 19A (one-year write-off for qualifying equipment) or depreciated over useful life
• Mobile phone — business-use proportion

Section 19A: Accelerated Depreciation

Singapore's Section 19A allows a one-year write-off for qualifying plant and machinery (including computers), regardless of cost. This is more generous than most countries' depreciation rules.

No Deduction for Personal Expenses

IRAS strictly separates business and personal expenses. Mixed-use items must be apportioned reasonably.

Tax Reliefs and Rebates

Singapore offers various personal tax reliefs that reduce chargeable income:

• Earned Income Relief: Up to SGD 1,000 (below age 55)
• CPF/MediSave Relief: Up to SGD 37,740 on CPF contributions
• Spouse Relief: SGD 2,000 (if spouse's income is below SGD 4,000)
• Working Mother's Child Relief: 15–25% of earned income per child
• Course Fees Relief: Up to SGD 5,500 for approved courses
• Life Insurance Relief: Up to SGD 5,000
• SRS (Supplementary Retirement Scheme): Contributions of up to SGD 15,300/year (citizens/PRs) or SGD 35,700 (foreigners) are tax-deductible

SRS: A Powerful Tool for Foreign Prop Traders

The Supplementary Retirement Scheme (SRS) deserves special attention:

• Foreigners can contribute up to SGD 35,700/year (citizens/PRs: SGD 15,300)
• Contributions are fully tax-deductible
• Withdrawals after the statutory retirement age are taxed at 50% (i.e., only half is taxable)
• Penalty-free withdrawals from age 62 (10 years after contribution start)
• This effectively halves the tax on retirement savings

Filing Requirements and Deadlines

Essential Registrations

• NRIC/FIN — National Registration Identity Card (citizens/PRs) or Foreign Identification Number
• SingPass — for accessing IRAS online services (myTax Portal)
• ACRA registration — if registering a business entity (not required for sole proprietors earning below SGD 100,000)

Key Deadlines

Deadline	Description
April 15	Individual income tax return (electronic filing, Form B)
April 18	Paper filing deadline
January	IRAS sends Notice of Assessment (NOA) for previous year
Ongoing	GIRO installment payments (interest-free monthly payments)

Tax Year

Singapore's Year of Assessment (YA) is the year in which income is assessed. Income earned in calendar year 2025 is assessed in YA 2026 and reported in the return filed by April 2026.

Form B (Self-Employment)

Self-employed individuals file Form B (not Form B1, which is for employment income only):

• Declare all trade income including prop firm payouts
• Claim business expenses and capital allowances
• Declare personal reliefs
• Submit through myTax Portal

GIRO Payment Plan

IRAS offers interest-free installment payments via GIRO:

• Typically 10–12 monthly installments
• Automatic deduction from bank account
• No penalty for using installments

Record Keeping

Singapore tax law requires records for 5 years from the relevant YA. Prop traders should maintain:

• All payout confirmations from prop firms
• Bank statements showing incoming transfers
• Exchange rate records (MAS reference rates)
• Receipts for all claimed expenses
• CPF/MediSave contribution records
• SRS contribution records
• Business registration documents (if applicable)
• Tax return filing confirmations

Common Mistakes to Avoid

1. Assuming 0% Capital Gains Treatment

Singapore's zero capital gains tax does not apply to systematic prop trading. The badges of trade clearly point to taxable trade income.

2. Not Contributing to MediSave (Citizens/PRs)

Mandatory MediSave contributions are required for self-employed citizens and PRs. Non-compliance triggers penalties.

3. Not Utilizing SRS

The SRS provides significant tax savings, especially for foreigners (SGD 35,700 deduction). Not using it is a missed opportunity.

4. Filing the Wrong Form

Self-employed income must be declared on Form B, not Form B1. Filing the wrong form creates delays and potential penalties.

5. Not Claiming Section 19A Write-Off

Singapore's generous one-year equipment write-off is often missed. Computer equipment can be fully expensed in the year of purchase.

Step-by-Step Reporting Guide

Step 1: Set Up SingPass and myTax Portal

Register for SingPass and link it to IRAS's myTax Portal.

Step 2: Track All Income and Expenses

Maintain records of prop firm payouts (converted to SGD) and business expenses.

Step 3: Make MediSave Contributions (Citizens/PRs)

Ensure mandatory MediSave contributions are made.

Step 4: Maximize Tax Reliefs

Contribute to SRS, claim earned income relief, and utilize all applicable personal reliefs.

Step 5: File Form B by April 15

Submit electronically through myTax Portal.

Step 6: Set Up GIRO for Tax Payments

Arrange interest-free installment payments.

Step 7: Maintain Records for 5 Years

Store all documentation securely.

Tax Planning Strategies

SRS Maximization

The single most effective strategy for prop traders in Singapore:

• Foreigners: SGD 35,700/year deduction
• At the 22% marginal rate: SGD 7,854 annual tax saving
• Withdrawals taxed at only 50% after retirement age

Income Timing

Singapore taxes on a preceding-year basis. Timing payout requests around the calendar year boundary can affect which YA the income falls into.

Consider Company Structure (With Caution)

Singapore's corporate tax rate is 17% (with partial exemption on first SGD 200,000). For high-income traders, a company structure may provide some benefit, but:

• Additional compliance costs (audit, annual returns)
• Dividend distribution to the individual is tax-free in Singapore
• Must demonstrate genuine business substance

Official Resources

• IRAS (Inland Revenue Authority of Singapore)↗ — primary tax authority
• myTax Portal↗ — online tax services
• CPF Board↗ — Central Provident Fund
• MAS (Monetary Authority of Singapore)↗ — exchange rates and financial regulation
• ACRA↗ — business registration

---

This guide provides general tax information for educational purposes. It does not constitute tax advice. The classification of prop firm income in Singapore has not been definitively ruled upon by IRAS. Tax laws change frequently, and individual circumstances vary. Consult a qualified Singapore tax professional before making any decisions based on this information.