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Tax planning, avoidance and evasion: where the lines are

Pay a fair amount of tax — not more, never fraudulently less. The three-way distinction, what s33 lets IRAS unwind, and the planning moves that are simply fine.

Alyst editorial team
Updated 2 Aug 2026 · 7 min read
Last reviewed 2 Aug 2026
In 30 seconds

What is the difference between tax planning, tax avoidance and tax evasion?

Tax planning fulfils both the letter and the intent of the law, supported by sound commercial reasons — using exemptions and reliefs as Parliament designed. Tax avoidance complies with the letter but not the intent, through arrangements lacking commercial substance; IRAS can disregard these under s33, adjust the tax and impose a 50% surcharge. Tax evasion uses illegal means such as false records, and carries penalties of up to four times the tax, fines and imprisonment.

Start from the principle: if you make money, expect to pay tax — a fair amount of it. Singapore's rates and exemptions are already among the friendliest anywhere. The question is never whether to arrange your affairs thoughtfully, but which side of two lines the arrangement falls.

The three categories

What it isOutcome
PlanningFulfils the legal requirements and the intent of the law; supported by sound commercial decisionsFine — encouraged, even
AvoidanceFulfils the letter but not the intent; lacks commercial reasonsIRAS can unwind it and surcharge
EvasionIllegal means — forged documents, false entries, undeclared incomeProsecution

Avoidance is policed by the general anti-avoidance rule in s33 of the Income Tax Act: where an arrangement's purpose is to obtain a tax advantage and it lacks bona fide commercial justification, the Comptroller may disregard or vary it, recompute the tax, and impose a surcharge of 50% of the adjustment. The classic pattern: splitting one business across multiple shell companies so each claims the start-up exemption — legal-looking paperwork, no commercial substance, unwound with a surcharge.

Evasion under s96 and s96A is different in kind: for serious fraudulent evasion, up to four times the tax undercharged, fines up to S$50,000, and imprisonment up to five years. Fake invoices, unrecorded cash sales, fabricated expenses — these are not aggressive planning, they are offences.

Legitimate planning, from a practitioner's list

  • Maximise the exempt amounts — the start-up and partial exemptions exist to be used.
  • Time your first FYE so exemption years cover profitable trading — the cheapest planning available, decided at incorporation.
  • Use loss and allowance carry-forwards — subject to the shareholding and same-trade tests; defer capital allowance claims in loss years to preserve them.
  • Use the renovation cap deliberatelys14N allows S$300,000 of fit-out deductions every three years; timing large works around the cap is planning, not avoidance.
  • Compensate yourself fairly and think about how you take returns — salary (deductible to the company, taxed in your hands) versus dividends (from taxed profits, tax-free to you). A defensible mix reflecting real work is planning.

Timing is the discipline

The line an experienced accountant will repeat: "you cannot plan for something that has already happened." Planning happens before the transaction — before the year end closes, before the contract is signed, before the structure is set. Afterwards, the facts are fixed, and "re-characterising" them is where avoidance and evasion begin. Understand the tax consequences before you execute; if in doubt, ask — IRAS's own guidance, your accountant, or the authority directly.

Frequently asked questions

This guide is general information, not legal or tax advice. Confirm requirements with ACRA and IRAS, or speak to your corporate secretary.

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