Freelancer And Sole Proprietor Tax Singapore | IRAS Rules, Deductions, And B-Form Filing

Business income is not reported like employee salary, which is why freelancer sole proprietor tax Singapore rules can feel confusing. Freelancers, commission agents, private-hire drivers, hawkers, partners, and sole proprietors are treated as self-employed persons when they earn income through a trade, business, profession, or vocation. IRAS says self-employed persons must report business income as part of total personal income in Form B or Form B1.

For a small business owner, the main risk is not always paying too much tax. It is mixing personal money with business income, missing deductions, keeping weak records, or forgetting MediSave duties after filing.

What Counts As Self-Employed Income?

Self-employed income is income earned through work done as a business owner rather than as an employee. A freelance designer, tuition teacher, consultant, delivery worker, online seller, coach, or sole proprietor may all fall into this category if the work is carried on as a trade or profession.

IRAS says sole proprietors and self-employed persons should report income under “Trade, Business, Profession or Vocation” in Form B or Form B1. This means a freelancer should not treat client payments as salary. The correct figure is usually business revenue minus allowable business expenses.

Sole Proprietor Tax Filing Form B Singapore

Sole proprietor tax filing Form B Singapore work usually begins after the calendar year ends. IRAS states that self-employed persons can e-file between 1 March and 18 April. The filing is done through myTax Portal using Singpass or Singpass Foreign User Account.

For many freelancers, the hardest part is not the portal. It is preparing clean numbers. Before filing, the person should know total revenue, allowable expenses, net profit, any other personal income, and any reliefs or deductions that may apply.

Freelancer Income Tax Deduction Singapore

Freelancer income tax deduction Singapore rules depend on the purpose and proof of each expense. IRAS allows only allowable business expenses to be deducted against business income. Expenses should be incurred, related to the business, supported by proper documents, and not personal or capital in nature. IRAS also states that source documents should be kept for at least five years.

Common deductible costs may include business-use software, advertising, transport for business appointments, office supplies, professional fees, phone costs linked to work, and subcontractor costs. The key is business purpose. A laptop bought mainly for client work may be supportable, but a family holiday cannot become a business travel claim just because one email was sent during the trip.

Some self-employed persons can use the Fixed Expense Deduction Ratio instead of claiming actual expenses. IRAS says qualifying commission agents, private-hire or taxi drivers, and delivery workers can claim a prescribed percentage of gross income, subject to conditions.

Drawings Are Not Salary

A sole proprietor does not pay salary to himself or herself in the same way a company pays an employee. Money taken out of the business is usually a drawing. It is not a deductible salary expense.

This is an important difference. If a sole proprietor earns S$80,000 and takes S$3,000 per month for personal use, that withdrawal does not reduce business profit. The taxable business income is still calculated by deducting allowable business expenses, not personal drawings.

This is also why separate bank accounts help. When business collections and private spending sit in one account, tax filing becomes harder and errors become easier.

MediSave Contribution Self-Employed Singapore

MediSave contribution self-employed Singapore duties should be planned early because the bill can arrive after tax filing. IRAS says a self-employed person with net trade income above S$6,000 will receive a notice stating how much MediSave must be contributed. The contribution must be paid within 30 days of the notice date, unless the person uses an approved GIRO instalment plan.

This can surprise freelancers who focus only on income tax. A profitable year may create both tax payable and MediSave contribution duties. It is safer to set aside cash monthly instead of waiting for the notice.

Common Mistakes Freelancers Should Avoid

Freelancers and sole proprietors often get into trouble because they treat tax filing as a once-a-year task. The real work should happen monthly.

Avoid these mistakes:

• Recording only bank deposits and forgetting unpaid invoices.
• Claiming personal meals, personal travel, or home costs without business support.
• Treating drawings as salary.
• Losing receipts or keeping screenshots with no clear payment trail.
• Ignoring MediSave contributions until the CPF notice arrives.
• Filing late because income and expenses were not organised earlier.

IRAS may require stronger support if a claim looks unusual. Clean records protect the taxpayer and make filing less stressful.

What To Prepare Before Filing

Before filing Form B or Form B1, prepare a simple tax file. It should include yearly revenue, invoices issued, receipts collected, platform income reports, bank statements, expense categories, fixed asset details, CPF or MediSave records, and notes for any unusual claim.

Businesses with annual revenue of S$500,000 or more must upload a certified statement of accounts with the e-Form B or B1. IRAS says the statement must be signed by the self-employed person to confirm that the accounts are true and correct.

Conclusion

Freelancer sole proprietor tax Singapore filing becomes easier when income, expenses, drawings, records, and MediSave duties are tracked throughout the year. The goal is simple: report business income correctly, claim only supportable deductions, and keep enough cash ready for tax and MediSave.

A cleaner self-employed tax process works best when records, deductions, and filing dates are reviewed together. At Arnifi, our expert team helps founders build that setup. With the right structure, freelancers and sole proprietors can file with more confidence and keep records ready for long-term growth.

FAQs

1. Do Freelancers Need To File Tax In Singapore?

Yes. Freelancers must report business income as part of total personal income in Form B or Form B1 if they are self-employed and need to file an Income Tax Return.

2. What Is The Filing Deadline For Self-Employed Persons?

Self-employed persons can e-file Form B or Form B1 between 1 March and 18 April through myTax Portal.

3. What Expenses Can Freelancers Deduct?

Freelancers can deduct allowable business expenses that are incurred for the business, related to income generation, and supported by proper documents. Personal and capital expenses are generally not allowable as normal business expenses.

4. Do Sole Proprietors Need To Pay MediSave?

Yes, if their net trade income is above S$6,000. CPF Board will issue a notice after tax filing, and the compulsory MediSave amount must be paid within 30 days unless an approved GIRO instalment plan applies.