Timing your first FYE to keep the start-up exemption

The start-up exemption shelters up to S$125,000 of chargeable income in each of your first three Years of Assessment ("YAs") — and those three YAs tick by whether you made money or not. Most founders can't control when profit arrives. You can control your financial year end, and it is the one lever that decides how much of the exemption you actually use.

The mechanics that catch people

Two rules interact:

1. A YA's basis period cannot exceed 12 months. If your first set of accounts covers more than 12 months, IRAS splits it into two YAs.
2. The exemption runs for the first three YAs, consecutively, from whenever the first one falls.

Put together: a long first financial year doesn't delay the clock — it burns two exemption years at once, usually across the stretch when the company earned least.

A worked example

Say you incorporate on 15 August 2026.

• Option A — FYE 31 July 2027 (about 11.5 months). One basis period, one YA. Exemption years: YA 2028, YA 2029, YA 2030 — each backed by a full year of trading as revenue ramps.
• Option B — FYE 31 December 2027 (about 16.5 months). The period exceeds 12 months, so it is split into two YAs. Two of your three exemption years are consumed by the start-up phase — the months of setup costs and little revenue — and only one exemption year remains for a mature, profitable year.

Same company, same trading — but under Option B two exemption years are spent on the start-up phase rather than on trading years. Whether that costs materially more tax depends on when profits actually arise and whether the exemptions could have been used in the years they fell; a company with no profit in either scenario loses nothing. Where profits arrive in years two and three, the difference is real.

This is the arithmetic behind the practitioner's rule of thumb that the first FYE should land inside 12 months of incorporation — often around the 11-month mark. To be clear about why: the financial year end is a date you choose and state, so it is the chosen date that determines whether the first basis period exceeds 12 months. How quickly you close the books afterwards has no bearing on it — a late set of accounts does not extend the financial period.

Other things your FYE decides

The FYE also anchors the whole compliance calendar — AGM within six months, annual return within seven, ECI within three, the return the following 30 November. A 31 December FYE puts you in the year-end queue at every accounting firm; an off-peak FYE can mean better service at lower fees. Neither consideration outranks the exemption arithmetic, but they are worth weighing while the choice is free.

If you got it wrong

A year end can be changed by notifying ACRA under s198 of the Companies Act — with safeguards: ACRA approval is required if the resulting financial year exceeds 18 months, or if the year end was already changed within the previous five years. Fixing this before the first year closes is straightforward; after that, the YAs have already fallen where they fell. This is a decision to make at incorporation, ideally with advice — it costs nothing to get right and real money to get wrong.