ABSD strategies, and the 99-to-1 arrangement IRAS scrutinises

Why this guide is cautious by design

Because Additional Buyer's Stamp Duty can be a large sum, buyers naturally look for ways to reduce it. Some of what circulates is legitimate; some is not. This guide gives a careful overview - and is deliberately clear about the 99-to-1 partial-share arrangement, which has drawn scrutiny from IRAS, Singapore's tax authority. The aim is to help you tell a sound approach from a risky one.

The legitimate approaches

There are recognised, lawful ways the ABSD position is managed:

• Buying the first home under one name. A couple who buy their first property in one spouse's sole name leave the other spouse owning nothing - so a later purchase by that spouse is a genuine first-property purchase. This is planning the ownership properly from the start.
• Decoupling. Where a couple already jointly own their home, a genuine, full transfer of one spouse's share to the other restructures the property into one name. It is a real transaction with real costs, handled by lawyers.
• Simply paying the ABSD. Not a "strategy," but the honest baseline: buy the property and pay the duty that genuinely applies.

What these have in common is genuineness. The ownership position they create is real - someone really does own, or really does not own, what the stamp-duty position assumes.

The 99-to-1 arrangement, and why it draws scrutiny

The "99-to-1" arrangement refers to a property bought and then split into a very unequal co-ownership - such as 99% and 1% - between parties. The concern arises where this is done not for any genuine reason but specifically so that a co-owner can be added or removed in a way designed to reduce the ABSD that would otherwise be payable - in effect, presenting the transaction as something other than what it is.

IRAS has scrutinised 99-to-1 and similar partial-share arrangements precisely because, where they lack genuine substance and are structured mainly to avoid ABSD, they can be treated as tax avoidance. Where an arrangement is found to be a contrivance to avoid duty, the authority can recover the ABSD that should have been paid, and additional penalties or surcharges can apply.

The crucial point: it is not an unequal split itself that is the issue - co-ownership in unequal shares can be perfectly genuine. It is arrangements engineered, without real substance, for the purpose of avoiding the duty.

How to tell sound from risky

Ask one honest question of any arrangement: is this genuine, or is it a costume?

• A genuine arrangement reflects the real situation. The people who own the property really own it; the people who do not, really do not. There is a real reason for the structure beyond the tax outcome.
• A contrived arrangement is built to look like something it is not, with the tax saving as its only real purpose.

If an "ABSD strategy" only makes sense as a way to make a transaction appear different from its reality, treat it as a red flag - not a clever tip.

Why caution here matters

An aggressive or contrived stamp-duty arrangement is a poor trade: the downside - recovered duty, penalties, and the stress and reputational damage of a tax dispute - far outweighs the saving. The sound path is the boring one: plan ownership genuinely and early, use decoupling only as a real transfer where the numbers justify it, and otherwise pay the duty that genuinely applies.

The takeaway

There are legitimate ways to manage an ABSD position - buying the first home under one name, genuine decoupling, or simply paying the duty. The 99-to-1 partial-share arrangement has drawn IRAS scrutiny where it is a contrivance lacking genuine substance, and being found to have avoided duty can mean recovery of the ABSD plus penalties. The dividing line is genuineness. Get advice from a conveyancing lawyer, structure only what is real, and verify the current position - IRAS is the authority on what is and is not acceptable.