Singapore tax deadlines 2026.
Every individual and self-employed income tax deadline for Singapore in 2026. Plus recurring VAT / GST / sales tax filings. Each deadline links to notes on how to file, what people miss, and matching open tax rules.
Annual deadlines
1 this yearOpen tax rules for Singapore
Prepare this return with open-source skills
These skills are in the OpenAccountants repo. Add them to your AI agent and they handle the computation.
Use this skill whenever asked about forming, incorporating, or registering a company in Singapore. Trigger on phrases like "set up a company in Singapore", "Pte Ltd", "ACRA registration", "Singapore company formation", "register a business Singapore", "BizFile+", "Singapore incorporation", "company secretary Singapore", "resident director Singapore", "Employment Pass", or any question about starting a business entity in Singapore. Covers entity types (Pte Ltd, LLP, sole proprietorship), registration process, capital requirements, costs, post-formation compliance, and bank account opening. ALWAYS read this skill before advising on Singapore company formation.
Use this skill when advising on LEGAL tax minimization strategies for Singapore taxpayers — individuals, sole proprietors, and small companies. Trigger on phrases like "reduce my tax Singapore", "tax planning", "personal reliefs", "SRS", "CPF", "sole proprietor vs company", "IRAS", "GST optimization", "capital allowances Singapore", "no capital gains tax", "tax residency", or any question about legally minimizing Singapore income tax. Covers entity selection, relief optimization, capital allowances, loss utilization, timing, GST planning, CPF/SRS strategies, and red lines. ALWAYS read this skill before giving Singapore tax optimization advice.
Singapore GST for 2026: registration tests, the GST F5 box by box, input tax and blocked expenses, reverse charge, overseas vendor registration, InvoiceNow, error correction and penalties.
Use this skill whenever asked about Singapore CPF MediSave contributions for self-employed persons (SEPs). Trigger on phrases like "MediSave contribution", "CPF self-employed", "how much MediSave do I pay", "net trade income CPF", "voluntary CPF contributions", "BHS", "Basic Healthcare Sum", "MediShield Life", or any question about MediSave obligations for a self-employed client in Singapore. This skill covers mandatory MediSave rates by age, contribution caps, voluntary CPF contributions, tax relief, payment deadlines, penalties, and edge cases. ALWAYS read this skill before touching any Singapore CPF/MediSave-related work.
Use this skill whenever asked about Singapore cryptocurrency or digital asset taxation. Trigger on phrases like "crypto tax Singapore", "Bitcoin Singapore", "digital tokens Singapore", "cryptocurrency gains Singapore", "IRAS crypto", "GST crypto Singapore", "staking Singapore", "mining income Singapore", "NFT tax Singapore", "Coinbase Singapore", "Binance Singapore", "payment tokens", "digital payment tokens", "capital gains Singapore crypto", "crypto business income Singapore", or any question about the income tax, GST, or reporting obligations for cryptocurrency, tokens, or digital assets for Singapore tax residents or Singapore-source crypto income. Covers IRAS e-Tax Guide on Digital Tokens (income tax and GST), trader vs investor distinction, badges of trade, and GST exemption for digital payment tokens. ALWAYS read this skill before touching any Singapore crypto work.
Singapore income tax for self-employed individuals, sole proprietors and freelancers filing Form B on the preceding year basis. Trigger on "how much tax do I pay in Singapore", "Form B", "IRAS income tax", "self-employed tax Singapore", "trade income", "capital allowances Singapore", "personal reliefs", "tax residence 183 days", "CPF self-employed", "myTax Portal", "PayNow transfer", "Stripe Singapore", "DBS Bank statement" or "OCBC income". Covers resident rates, tax residence, business income and allowable expenses, capital allowances, personal reliefs, CPF relief on MediSave, donations, filing deadlines and penalties. Routes MediSave rates to sg-cpf-medisave, residence to sg-tax-residency and GST to sg-gst-return.
Singapore GST for 2026: registration tests, the GST F5 box by box, input tax and blocked expenses, reverse charge, overseas vendor registration, InvoiceNow, error correction and penalties.
Use this skill when asked about capital gains in Singapore. Trigger on: "CGT Singapore", "capital gains Singapore", "sell shares Singapore", "Singapore no capital gains tax", "investment gains Singapore", "crypto tax Singapore", "Singapore property gains", "dispose assets Singapore". Singapore has no capital gains tax — this skill confirms that and explains the trading income boundary.
Prepare a Singapore review pack with open skills
These skills can help your AI agent draft computations, organize schedules, and prepare a review package. They do not replace a tax preparer or determine your final filing position. The OpenAccountants repo has open skills, accountant-reviewed where available — run them with your AI agent, then have an accountant review.