Hong Kong parents who buy a flat around the birth of a child will be able to knock up to HK$20,000 off their stamp duty bill under a concession announced in the Chief Executive's 2026 Policy Address on Sept. 16, according to guidance published by the Inland Revenue Department. The break applies per child, so a couple with two eligible children, or both parents buying jointly, can claim up to HK$40,000.

The measure still needs a stamp duty amendment bill to pass the Legislative Council. Buyers do not have to wait, however. The department says parents who pay full duty on a qualifying purchase before the law takes effect can apply for a refund of the excess once it does, which means the rules already shape decisions for families buying this year.

Who qualifies for the newborn stamp duty concession

The department's FAQ sets out five conditions. The property must be residential. It must be bought by a parent of a child born in Hong Kong on or after Sept. 16, 2026. Either parent must be a Hong Kong permanent resident. The parent must be buying on his or her own behalf, not as a nominee. And the purchase must fall within a window running from one year before the birth to two years after it.

Births outside Hong Kong do not count, the IRD said, because the aim is to encourage childbirth in the city. That excludes, for example, a resident family whose baby is delivered overseas, even if they later buy a flat in Hong Kong within the window.

The one-year look-back is the detail many buyers miss. A family that signed for a flat in, say, early 2026 and has a child in the city before that purchase is a year old may be able to recover part of the duty already paid. The IRD said it will publish refund guidelines after the bill passes.

The concession is counted per child. One parent can use two eligible children on two separate flats, each parent can use one child on one flat, or both parents can stack the two waivers on a jointly owned home.

Hong Kong stamp duty rates: where HK$20,000 matters

The waiver reduces ad valorem stamp duty by the lower of HK$20,000 or the duty actually payable under the residential scales. The IRD gives two examples: a HK$19,000 bill falls to zero, while a HK$21,000 bill falls to HK$1,000.

Set against the current rates table, the effect depends heavily on price. Residential purchases up to HK$4 million already pay a flat HK$100 in duty, so the concession saves a buyer at that level just HK$100. Above HK$4 million the duty climbs quickly. A home at HK$4.5 million carries 1.5%, or HK$67,500, which the waiver would cut to HK$47,500. At HK$6 million the rate is 2.25%, or HK$135,000, falling to HK$115,000. A HK$9 million flat, taxed at 3%, owes HK$270,000 before the concession.

In other words, the waiver is worth most, in proportion, to families buying just above the HK$4 million line, where the marginal band (HK$100 plus 20% of the excess over HK$4 million) produces bills in the tens of thousands. A HK$4.1 million purchase, for instance, owes HK$20,100, which the concession reduces to HK$100.

At the top of the market the direction has been the opposite. Lawmakers in May raised the rate on residential deals above HK$100 million from 4.25% to 6.5%, backdated to Feb. 26, a change the government expected to add about HK$1 billion a year in revenue while affecting roughly 0.3% of transactions, the IRD said. The Standard reported that a property-sector lawmaker opposed that increase as a drag on a recovering market. Buyers tracking the wider market can follow October's home sales data and the supply pipeline.

The tax package for new parents

The stamp duty break sits alongside a second Policy Address measure on salaries tax. The child allowance for a taxpayer's second and later children born on or after Sept. 16, 2026, would rise to HK$160,000 from HK$140,000, and the extra allowance in the first two years after birth for those children would rise by the same amount, starting in the 2026/27 year of assessment, according to the IRD. That change also requires legislation.

Two practical points follow for buyers. First, stamp duty on a sale and purchase agreement is due at the full current rate until the new ordinance is in force, so families should budget for the whole bill and treat the concession as a later refund. Second, the IRD has warned that details may change during the legislative process, so the final eligibility window, documentation and refund deadline will only be fixed once the amendment bill is published and passed.

The next marker is the bill itself: the government has said it will introduce it to the Legislative Council, and the IRD will then issue the refund guidelines that determine how families who bought before enactment claim the money back.