The difference is structural, not just a matter of lower rates. Hong Kong's effective rate tops out around 15.6% and then falls, because a flat 15% standard rate acts as a ceiling.
The UK's effective rate never stops climbing: 30.27% at £90,000, 40.45% at £180,000 and 43.73% at £360,000. The gap widens the more you earn, which is the opposite of how most country comparisons work.
Hong Kong, peak effective rate
15.6%
then it declines
UK at £360,000
43.73%
still rising
MPF, at every salary
HK$18,000
a year, capped
Run your actual Hong Kong offer through both tax methods.
Open the Hong Kong take-home calculatorWhy Hong Kong's rate stops climbing
Salaries Tax charges whichever of two calculations produces the lower bill: progressive rates from 2% to 17% on income after allowances, or a flat standard rate of 15% on income before allowances. At ordinary salaries the progressive method wins. Past roughly HK$2,400,000 the standard rate takes over, and from there it is a hard ceiling.
| Gross | Salaries Tax | MPF | Net | Effective |
|---|---|---|---|---|
| HK$400,000Progressive | HK$22,290 | HK$18,000 | HK$359,710 | 10.07% |
| HK$900,000Progressive | HK$107,290 | HK$18,000 | HK$774,710 | 13.92% |
| HK$1,200,000Progressive | HK$158,290 | HK$18,000 | HK$1,023,710 | 14.69% |
| HK$1,800,000Progressive | HK$260,290 | HK$18,000 | HK$1,521,710 | 15.46% |
| HK$2,400,000Standard rate | HK$357,300 | HK$18,000 | HK$2,024,700 | 15.64% |
| HK$3,600,000Standard rate | HK$537,300 | HK$18,000 | HK$3,044,700 | 15.43% |
Look at the last two rows. The effective rate at HK$3,600,000 is lower than at HK$2,400,000, because once the standard rate applies the only thing still changing is the fixed HK$18,000 of MPF, which shrinks as a share of a larger salary.
The UK side, for the same exercise
| Gross | Income Tax | NI | Net | Effective |
|---|---|---|---|---|
| £40,000 | £5,486 | £2,194 | £32,320 | 19.20% |
| £90,000 | £23,432 | £3,811 | £62,757 | 30.27% |
| £120,000 | £39,432 | £4,411 | £76,157 | 36.54% |
| £180,000 | £67,203 | £5,611 | £107,186 | 40.45% |
| £240,000 | £94,203 | £6,811 | £138,986 | 42.09% |
| £360,000 | £148,203 | £9,211 | £202,586 | 43.73% |
Why there is no currency conversion here
Each column is in its own currency on purpose. An exchange rate written into an article is wrong within weeks, and it is not what either payslip shows. Compare the effective rates and the structure, then apply today's rate to your own two offers. Worth knowing: the Hong Kong dollar is pegged to the US dollar, so the sterling to Hong Kong dollar rate moves with sterling against the dollar rather than with anything happening in Hong Kong. Both sets of figures are PayMetric Labs' own calculations using our UK and Hong Kong tax engines at 2026 rates, for a single taxpayer claiming only the basic allowance.
MPF and National Insurance are not the same kind of thing
MPF is a mandatory contribution into a retirement account with your name on it. The employee share is capped at HK$1,500 a month, so it is HK$18,000 a year whether you earn HK$400,000 or HK$3,600,000. At senior salaries it is close to a rounding error, and the money remains yours.
National Insurance is a contribution to a state system that buys entitlement rather than a balance. It keeps rising with income, and while the rate drops above the upper earnings limit it never stops accruing. The two lines look similar on a payslip and behave completely differently.
The UK band with no Hong Kong equivalent
Between £100,000 and £125,140 the UK personal allowance tapers away at £1 for every £2 of income, producing a marginal rate around 60%. Across the whole band you keep just 38.0% of the increase: £25,140 more gross becomes £9,553 more net. Hong Kong has no taper and nothing else that makes a raise worth less than the band below it.
Where the tax saving actually goes
Housing. Hong Kong rents are among the highest in the world, and for anyone renting at normal family size a large share of the tax difference will end up with a landlord. The tax saving is real and it is large; whether it survives a Hong Kong lease is a separate calculation, and one worth doing with actual asking rents for the districts you would genuinely consider rather than a headline average.
There is one meaningful lever. A housing benefit provided by the employer is assessed on a rental value basis rather than taxed as straight salary, which can reduce the assessable amount compared with taking the same money as cash. The structure has to be right for it to work, so it is worth understanding before you negotiate rather than after.
The other honest caveat is what the two tax bills buy. UK tax funds healthcare you would be paying for privately in Hong Kong, and most employers there provide medical cover precisely because of that. Compare the packages, not just the payslips.
Model a housing allowance properly
See what the rental value basis does to the assessable amount compared with taking the same money as salary.
Open the Housing Allowance CalculatorStay current
Hong Kong salary data updates with every IRD change
Salaries Tax bands, allowances, and MPF thresholds shift most years. We update every benchmark the same week. Get the email before you negotiate.
No spam. Unsubscribe any time. GDPR-compliant.
Frequently asked questions
How much lower is Hong Kong tax than UK tax?
Structurally, not just numerically. Hong Kong's effective rate tops out at about 15.6% and then starts falling, because the standard rate of 15% on total income acts as a ceiling. The UK's effective rate keeps climbing: 30.27% at £90,000, 40.45% at £180,000 and 43.73% at £360,000. The gap widens the more you earn, which is the opposite of how most country comparisons behave.
Why does Hong Kong's effective rate go down at the top?
Because Salaries Tax charges whichever is lower of two calculations: progressive rates of 2% to 17% on income after allowances, or a flat standard rate of 15% on income before allowances. At lower incomes the progressive method wins. Above roughly HK$2,400,000 the standard rate takes over and becomes a hard ceiling, so the effective rate converges downward toward 15% as the fixed MPF deduction shrinks in relative terms.
Is MPF the same as National Insurance?
No, in two important ways. MPF is your own retirement savings in an account with your name on it, not a contribution to a state system. And the employee contribution is capped at HK$1,500 a month, so it is HK$18,000 a year at every salary level on this page. UK National Insurance keeps rising with income, and it buys entitlement rather than an account balance.
What is the UK 60% trap and does Hong Kong have anything like it?
Between £100,000 and £125,140 the UK personal allowance tapers away at £1 for every £2 earned, creating a marginal rate around 60%. Across that whole band you keep only 38.0% of the increase: £25,140 more gross turns into £9,553 more net. Hong Kong has no equivalent taper, and nothing that makes a raise worth less than the band below it.
Why does this page not convert between the currencies?
Because an exchange rate baked into an article is wrong within weeks and is not what either payslip shows. Compare the effective rates and the structure, then apply today's rate to your own two offers. The Hong Kong dollar is pegged to the US dollar, so the GBP to HKD rate moves with sterling against the dollar rather than with anything happening in Hong Kong.
Does the lower tax actually leave you better off?
It depends almost entirely on housing. Hong Kong rent is among the highest in the world and will consume much of the tax difference for anyone renting at a normal family size. The tax saving is real and large; whether it survives contact with a Hong Kong lease is a separate calculation, and one worth doing with actual rents for the districts you would consider.
Does a housing allowance change the tax position?
Yes, and it is one of the few genuine planning levers in the Hong Kong system. A properly structured housing benefit provided by the employer is taxed on a rental value basis rather than as straight salary, which can reduce the assessable amount compared with receiving the same money as cash. The structure has to be right, so it is worth understanding before negotiating.
What does this comparison leave out?
Several things that matter. Hong Kong allowances beyond the basic one, such as married person, child and dependent parent allowances, which reduce the progressive calculation. UK pension salary sacrifice, which is a large lever for high earners and has no close Hong Kong equivalent. Student loan repayments in the UK. And the entire question of what each system gives you back, since UK tax funds healthcare that you would buy privately in Hong Kong.
Figures are PayMetric Labs' own calculations using our UK and Hong Kong tax engines at 2026 rates, for a single taxpayer claiming only the Hong Kong basic allowance and the UK personal allowance, with no pension contributions, salary sacrifice or student loan. Hong Kong married person, child and dependent parent allowances would reduce the progressive calculation. No exchange rate is applied. General information only, not personal tax advice.