The headline rates, and why they mislead

Singapore's top income tax rate is 24%, and it only applies above S$320,000. Below that, rates are much lower; Singapore leans on residents fairly hard at the bottom of the scale but goes easy on high earners. There is no capital gains tax, no inheritance tax and no wealth tax.

The UK's top rate is 45%, landing on income above £125,140 once the personal allowance is fully gone. National Insurance of 2% then applies to all earnings above £50,270, and between £100,000 and £125,140 sits the 60% effective rate created by the allowance taper.

But "24% against 45%" skips something important: Singapore workers pay CPF (Central Provident Fund) contributions at a rate that looks steep yet does a very different job from tax.

CPF: Singapore's compulsory savings system

CPF is not a tax, even though it behaves like one on the payslip. Employees under 55 put in 20% of ordinary wages, up to a monthly wage ceiling of S$7,400, and employers add another 17.5%, so the combined contribution can top 37% of salary.

Unlike UK tax or German social contributions, your CPF flows into three accounts that are yours: the Ordinary Account (housing, education, investment), the Special Account (retirement) and Medisave (healthcare). You own the money and can use it for approved purposes, and at 55 you can take out anything above the required retirement sum.

CPF is, in effect, your own money; tax is not. That distinction matters a great deal when you compare Singapore and UK take-home pay.

Professional salaries: UK against Singapore

Take a finance professional somewhere in the S$120,000-S$200,000 range, a common band for mid-to-senior finance and tech staff in both cities.

The Singapore figures count income tax only, not CPF, since CPF stays your own money. Even so, in straight cash terms Singapore professionals keep far more.

On a S$250,000 / £165,000 salary (a similar purchasing-power band), the Singapore professional loses roughly S$5,750 a month to tax alone, a 27.6% effective rate. The UK professional's income tax and NI together come to about £5,500, a 40% effective rate. In cash, that leaves a gap of roughly S$4,000-5,000 a month in Singapore's favour.

What Singapore does not give you

Nothing comes entirely free. Singapore's lighter taxes also mean no universal NHS equivalent (your Medisave CPF account covers hospital bills, with private insurance filling the gap), a thinner safety net for unemployment (there is a severance framework, but it is not on a par with UK benefits), and no state pension funded by others. Your CPF is your retirement pot.

For young, healthy professionals who do not expect to lean on the NHS and who save with discipline, Singapore's model wins on almost every financial measure. For anyone with chronic health conditions, dependents, or less certainty about their own saving habits, the UK's universal cover carries real value.

Housing: Singapore's real sting

Singapore's tax edge is partly eaten up by housing. A two-bedroom flat in a central district rents for S$4,500-S$7,000 a month, while a comparable London place might run £2,800-£4,500.

Adjust for those higher rents and the disposable-income advantage narrows, though it does not vanish. A finance professional in Singapore on S$200,000 might pay S$5,500 in rent, leaving over S$9,000 after tax and rent. A London counterpart on £140,000 paying £3,500 rent is left with about £5,000. At this income the disposable gap still runs roughly 75-80% in Singapore's favour.

Who gains most from the Singapore move?

The maths increasingly favours Singapore for finance professionals above S$150,000, tech staff at regional or global firms based there, and anyone planning to stay five years or more and build up serious CPF. After a decade of high earnings the CPF balance can be large: at S$200,000 a year you are adding more than S$40,000 to CPF annually on top of your cash take-home.

The UK still suits those who value NHS access without paying for private cover, people with deep ties to UK social infrastructure, and lower earners for whom Singapore's absolute cost of living cancels out most of the tax advantage.