One of the easiest tax wins available to a Singapore corporate group is also one of the most overlooked: the group relief system under Section 37C of the Income Tax Act 1947. Group relief lets a profitable company in a Singapore group absorb the unutilised losses, capital allowances, and donations of a loss-making sister company in the same year of assessment, immediately reducing the group’s overall tax bill.
Despite being on the statute books since Year of Assessment 2003, group relief is still under-claimed. SMEs often assume it is reserved for listed conglomerates. Foreign-headquartered groups sometimes miss it because their tax accountants overseas have never encountered Singapore’s specific 75% ownership test. And finance teams under close-of-year pressure occasionally miss the form-filing deadline.
This 2026 guide walks through who qualifies, what can be transferred, the documentation required, and the most common mistakes we see Singapore groups make when claiming group relief.
What Group Relief Does
Group relief allows a “transferor” company in a Singapore group to surrender certain unutilised tax items to a “claimant” company in the same group, where they are deducted against the claimant’s assessable income for the same year of assessment.
According to the Inland Revenue Authority of Singapore (IRAS), the system was introduced under Section 37C from Year of Assessment 2003 and is the principal mechanism by which corporate groups in Singapore consolidate tax positions on a current-year basis.
The transferable items are:
- Current year unabsorbed capital allowances
- Current year unabsorbed trade losses
- Current year unabsorbed donations made to approved Institutions of a Public Character (IPCs)
Critically, only current-year items qualify. Prior-year unabsorbed items must instead be carried forward by the transferor company itself (subject to the shareholding test) or carried back under the loss carry-back relief — they cannot be group-relieved.
The 75% Group Test
Two companies are in the same group only if all of the following are met:
- Both companies are Singapore-incorporated.
- They share the same accounting year-end (the “common accounting year-end” condition).
- One company holds, directly or indirectly, at least 75% of the ordinary shares of the other; or a third Singapore-incorporated company holds at least 75% of both.
- The 75% threshold relates to ordinary share capital, beneficial entitlement to profits, and beneficial entitlement to assets on winding up — all three must satisfy the 75% test.
The shareholding must be maintained throughout the entire continuous period of the relevant year of assessment. A change in shareholding part-way through the year — for example, a 60% sale to an external investor in October that drops the ownership below 75% — disqualifies the company for that year of assessment.
Foreign-incorporated parents are permissible only if a Singapore-incorporated holding company in the chain owns at least 75% of both the transferor and claimant. Foreign companies cannot themselves be transferors or claimants.
Order of Set-Off
Within a single year of assessment, the claimant company must set off its own current-year items first, before applying any group-relieved items. The order is:
- Claimant’s own current-year capital allowances against trade income
- Claimant’s own current-year trade losses against other income
- Claimant’s own current-year donations against statutory income
- Group-relieved capital allowances
- Group-relieved trade losses
- Group-relieved donations
This sequencing matters because it can change the optimum surrender amount. Over-surrendering items that the transferor could have used itself wastes the relief.
How to Make the Election
Group relief is not automatic. Both companies must elect into it, separately, on prescribed forms.
Transferor company: files Form GR-A with the amount of items it agrees to surrender, signed by both companies.
Claimant company: files Form GR-B with the amount it claims, signed by both companies.
The forms must be filed by the time the claimant company files its tax return for the relevant year of assessment, which for most Singapore companies is 30 November following the end of the basis period. Late forms or inconsistent figures between Form GR-A and Form GR-B are commonly rejected.
Before filing, both companies should also have lodged their Estimated Chargeable Income (ECI) on time, as group relief interacts with the ECI position.
Worked Example: A Two-Company Group
HoldCo Pte Ltd is a Singapore-incorporated parent holding 100% of TradeCo Pte Ltd and 100% of LossCo Pte Ltd. Both subsidiaries have a 31 December accounting year-end. For YA 2026:
- TradeCo has chargeable income of S$800,000 before group relief.
- LossCo has unabsorbed current-year trade losses of S$300,000.
If LossCo elects to surrender its S$300,000 loss to TradeCo, TradeCo’s chargeable income falls to S$500,000. At the prevailing 17% headline corporate tax rate, group relief saves the group S$51,000 in current-year tax.
Without group relief, LossCo would have to carry forward its S$300,000 loss to future years, where it would only be relieved when LossCo itself returns to profitability — and only if LossCo continues to satisfy the shareholding test on a year-by-year basis.
Group Relief vs Loss Carry-Back vs Carry-Forward
Singapore offers three distinct loss-utilisation mechanisms. Each has different conditions and different best-fit scenarios:
| Mechanism | What it does | Best for |
|---|---|---|
| Group relief (s37C) | Surrenders current-year items to a sister company in the same year of assessment | Groups with a profit-maker and a loss-maker in the same year |
| Loss carry-back (s37E) | Carries current-year losses back up to S$100,000 to the immediately preceding YA | Companies that were profitable last year and loss-making this year |
| Loss carry-forward | Carries unabsorbed items forward indefinitely (subject to shareholding test) | Standalone companies or losses exceeding the carry-back cap |
The three are not mutually exclusive. A loss-making company can carry back the first S$100,000, group-relieve some of the balance to a profitable sister company, and carry forward whatever remains — provided each item is properly tracked.
Common Mistakes Singapore Groups Make
From hundreds of group relief claims, these errors recur:
- Forgetting the common-year-end requirement. If the transferor and claimant have different accounting year-ends, group relief is unavailable. Aligning year-ends through a year-end change requires its own ACRA filing under Section 198 of the Companies Act and at least 12 months’ notice.
- Using shareholding as at year-end only. The 75% test must be met throughout the year. A mid-year share transfer that drops ownership below 75% breaks the chain.
- Surrendering more than is optimal. If the transferor has its own future profits coming, carrying losses forward may be more valuable than surrendering. Run the numbers under both scenarios.
- Filing inconsistent Form GR-A and Form GR-B figures. The amount surrendered on GR-A must equal the amount claimed on GR-B. Inconsistencies trigger IRAS queries and can void the election.
- Ignoring foreign holding chains. Where the immediate parent is foreign, you need to identify the highest Singapore-incorporated company in the chain and verify the 75% beneficial-ownership test through that entity.
- Forgetting to include indirect holdings. A 100% × 80% indirect chain still satisfies 75%. Don’t dismiss group relief just because direct ownership is below the threshold.
Interaction With Other Reliefs and Incentives
Group relief interacts with several other Singapore reliefs:
- Tax incentive holders (e.g. Pioneer status, Development & Expansion Incentive) may have specific carve-outs limiting group relief either into or out of the incentive ring-fence.
- Companies enjoying the start-up tax exemption can still elect into group relief, but the exempt amounts must first be applied before any items are surrendered.
- Foreign-sourced income remitted under Section 13(8) is excluded from the chargeable income against which group-relieved losses can be set off.
For a deeper look at company-level loss treatment generally, see our companion piece on Capital Allowances in Singapore, and on Foreign-Sourced Income Exemption.
Year-End Planning Checklist
Before the financial year closes, run this five-point check:
- Confirm all Singapore-incorporated group entities have the same accounting year-end.
- Map the shareholding chain and verify 75% is held throughout the entire year.
- Project chargeable income and current-year losses for each entity.
- Decide the optimum surrender amount, factoring in available carry-back and carry-forward alternatives.
- Diarise Form GR-A / GR-B preparation alongside Form C-S / Form C tax-return work.
How Raffles Corporate Services Can Help
Group relief is one of the cleanest planning tools available to Singapore corporate groups, but it punishes loose paperwork. Our tax team helps clients map their shareholding chain, optimise current-year surrender amounts, prepare Form GR-A and Form GR-B, and coordinate the filings with corporate tax returns and ECI submissions.
If your group has profitable and loss-making Singapore subsidiaries, talk to Raffles Corporate Services before the year of assessment closes. A few days of planning routinely saves five-figure or six-figure tax amounts.
— The Editorial Team, Raffles Corporate Services