Singapore

Self-Employed Tax

Free Singapore calculator designed to help users make accurate financial decisions using local standards.

By the GlobalCalqulate team, founded by Pavan Kusunuri · About our editorial standards

Business Income & Expenses

Annual gross business income (SGD)

Total revenue from freelance, consulting, or sole proprietorship before any deductions.

Deductible business expenses (SGD)

Supplies, equipment, transportation, home office, professional fees, marketing, etc.

Total deductible expenses (SGD) – auto-calculated

Sum of all business-related expenses. Auto-calculated from above field.

CPF & Other Income

CPF Medisave contribution (SGD per year)

Self-employed persons must contribute to Medisave: 8% of net income (or up to the cap). Auto-calculated if left blank.

Other taxable income (SGD)

Rental income, dividends, interest, or other income sources.

Tax Reliefs & Payments

Earned Income Relief (SGD)

SGD 1,000 for all taxpayers. Higher for seniors 55+ (SGD 6,000) or 60+ (SGD 8,000).

Other tax reliefs (SGD)

Parent relief, child relief, spouse relief, SRS contributions, course fees, etc.

Quarterly estimated payments already made (SGD)

Total of estimated tax payments already made to IRAS this year.

Tax Residency Status

Residents pay progressive rates. Non-residents pay flat 24% on trade income.

Balance Payable

1390

SGD (remaining tax due)

✓ Reviewed and updated for accuracy using current official rates and widely accepted formulas.

Key Tips

✓
Keep detailed records of all business expenses – IRAS may request evidence during audits.
✓
Claim all legitimate deductions – they directly reduce your taxable income.
✓
Self-employed persons must pay Medisave at 8% of net income – it's tax deductible.
✓
Pay quarterly estimated tax on time to avoid penalties and interest.
✓
Consider contributing to SRS – it reduces your taxable income and builds retirement savings.
✓
If you have employees, ensure you comply with CPF and IRAS regulations.
✓
Use accounting software (e.g., Xero, QuickBooks) to track income and expenses.
✓
File your tax return by 18 April to avoid late filing penalties.
✓
If your income fluctuates, update your quarterly estimate – avoid over/under payment.
✓
Engage a tax professional if your business income is complex or high.

Help & FAQs

Frequently Asked Questions

Clear answers to common questions to help you use this calculator confidently.

What is TDS (Tax Deducted at Source)?

Tap to view the answer

TDS is tax deducted by payers on contractor/freelancer payments (typically 5-10%). This amount counts toward your annual tax liability, and you may get a refund if overpaid.

When do I file quarterly taxes as self-employed?

Tap to view the answer

Quarterly tax filing is typically due 15 days after quarter-end (April 15, July 15, October 15, January 15). Late filing incurs penalties from IRAS.

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How to Use This Calculator

Enter annual gross business income

Total revenue from freelance work, consulting, or business before expenses.

Add all deductible business expenses

Supplies, equipment, transportation, home office, professional fees, etc.

Review net business income

Your business profit after expenses – this is what you pay tax on.

Enter CPF Medisave contribution

Self-employed must contribute 8% of net income to Medisave (or leave blank to auto-calculate).

Add other income and reliefs

Include other taxable income and claim eligible reliefs.

Review tax estimate

See your estimated annual tax, quarterly payment obligations, and any under/overpayment.

Understanding Your Results

Net Business Income
Gross business income minus deductible expenses. This is your business profit and is taxable.
Deductible Business Expenses
Costs directly related to earning your business income – supplies, equipment, transport, home office, professional fees, marketing, insurance, and more.
CPF Medisave Contribution
Self-employed persons must contribute to Medisave at 8% of net business income (capped at rates based on age). Contributions are tax deductible.
Chargeable Income
Net business income + other income − CPF contributions − tax reliefs. This is what you pay tax on.
Income Tax Payable
Tax calculated using progressive rates (0% to 24%) for residents, or flat 24% for non-residents on trade income.
Quarterly Estimated Tax
IRAS requires self-employed persons to pay estimated tax quarterly. This is your annual tax divided into 4 quarterly payments (or adjusted if you have income from other sources).
Balance Payable / Refund
Difference between total tax payable and quarterly payments already made. If negative, you have a refund or credit.

Key Tips

✓
Keep detailed records of all business expenses – IRAS may request evidence during audits.
✓
Claim all legitimate deductions – they directly reduce your taxable income.
✓
Self-employed persons must pay Medisave at 8% of net income – it's tax deductible.
✓
Pay quarterly estimated tax on time to avoid penalties and interest.
✓
Consider contributing to SRS – it reduces your taxable income and builds retirement savings.
✓
If you have employees, ensure you comply with CPF and IRAS regulations.
✓
Use accounting software (e.g., Xero, QuickBooks) to track income and expenses.
✓
File your tax return by 18 April to avoid late filing penalties.
✓
If your income fluctuates, update your quarterly estimate – avoid over/under payment.
✓
Engage a tax professional if your business income is complex or high.

Singapore Self-Employed Tax Guide (2026)

Who is self-employed for tax purposes?

Self-employed persons include freelancers, consultants, sole proprietors, gig workers, and anyone earning income from their own business or trade. You are taxed on business profits, not gross revenue.

Tax treatment of business income

Your net business income (gross income minus deductible expenses) is added to other income and taxed at progressive rates. Self-employed persons must file Form B/B1 via IRAS.

Deductible business expenses

Common deductions: office supplies, equipment, transportation, travel, home office costs, professional fees, marketing, insurance, rental of business premises, salaries to employees, and depreciation on assets.

Non-deductible expenses

Personal expenses, capital expenses (unless qualifying for capital allowances), fines and penalties, entertainment not directly related to business, and private car expenses.

CPF Medisave for self-employed

Self-employed persons must contribute to Medisave based on their net business income. The rate is 8% (capped at certain income levels). Contributions are tax deductible and go into your MediSave account for healthcare expenses.

Quarterly estimated tax payments

Self-employed persons are required to pay estimated tax quarterly in April, July, October, and January. IRAS may also require you to pay based on your estimated chargeable income if your tax exceeds certain thresholds.

Filing tax returns for self-employed

You must file Form B or Form B1 by 15 April (paper) or 18 April (e-filing). You'll need to report your business income, expenses, and CPF contributions.

Tax reliefs for self-employed

You can claim Earned Income Relief (SGD 1,000), CPF relief (employee contributions), SRS relief, Parent Relief, Child Relief, Spouse Relief, Course Fees Relief, and Working Mother's Child Relief.

Record keeping requirements

Keep records of all business income and expenses for at least 5 years. IRAS may request supporting documents for audits. Use accounting software or engage a bookkeeper.

Disclaimer

This calculator provides estimates for educational purposes. Actual tax liability depends on individual circumstances, expense substantiation, and IRAS assessment. Always consult a tax professional for your specific situation.

Singapore Self-Employed Tax Guide (2026)

Who is self-employed for tax purposes?

Tax treatment of business income

Your net business income (gross income minus deductible expenses) is added to other income and taxed at progressive rates. Self-employed persons must file Form B/B1 via IRAS.

Deductible business expenses

Non-deductible expenses

Personal expenses, capital expenses (unless qualifying for capital allowances), fines and penalties, entertainment not directly related to business, and private car expenses.

CPF Medisave for self-employed

Quarterly estimated tax payments

Filing tax returns for self-employed

You must file Form B or Form B1 by 15 April (paper) or 18 April (e-filing). You'll need to report your business income, expenses, and CPF contributions.

Tax reliefs for self-employed

You can claim Earned Income Relief (SGD 1,000), CPF relief (employee contributions), SRS relief, Parent Relief, Child Relief, Spouse Relief, Course Fees Relief, and Working Mother's Child Relief.

Record keeping requirements

Keep records of all business income and expenses for at least 5 years. IRAS may request supporting documents for audits. Use accounting software or engage a bookkeeper.

Business Income & Expenses

CPF & Other Income

Tax Reliefs & Payments

Key Tips

What is TDS (Tax Deducted at Source)?

When do I file quarterly taxes as self-employed?

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Business Income & Expenses

CPF & Other Income

Tax Reliefs & Payments

How to Use This Calculator

Understanding Your Results

Key Tips

Singapore Self-Employed Tax Guide (2026)

Who is self-employed for tax purposes?

Tax treatment of business income

Deductible business expenses

Non-deductible expenses

CPF Medisave for self-employed

Quarterly estimated tax payments

Filing tax returns for self-employed

Tax reliefs for self-employed

Record keeping requirements

Disclaimer

How to Use This Calculator

Understanding Your Results

Singapore Self-Employed Tax Guide (2026)

Who is self-employed for tax purposes?

Tax treatment of business income

Deductible business expenses

Non-deductible expenses

CPF Medisave for self-employed

Quarterly estimated tax payments

Filing tax returns for self-employed

Tax reliefs for self-employed

Record keeping requirements

Disclaimer