Pay GuideTax Year 2026/27

Data Scientist Pay UK 2026/27

Data scientist salaries have remained resilient, especially for roles that combine modelling with production engineering skills. London and financial services continue to pay clear premiums over national averages.

Calculate your take-home →See salary breakdown

At a Glance

Junior Data Scientist£35,000£28,721
Mid-level Data Scientist£55,000£42,458
Senior / Principal Data Scientist£75,000£54,058

GROSS / TAKE-HOME

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UK data science pay held up well through the 2023-24 tech downturn, particularly for practitioners who can deploy models into production rather than only build prototypes.

Harnham's 2024 UK Salary Guide reported median pay of £53,000 nationally and £68,000 in London, with further uplift for NLP/LLM capability, cloud MLOps skills, and financial services exposure.

The title itself spans analyst-adjacent posts through to ML engineering, and compensation tracks the technical depth of the role.

Take-home calculator

Your take-home pay

Enter your salary and we'll break down income tax, National Insurance, pension contributions and your final take-home for 2026/27.

Your taxes (2026/27)

	Year	Month	Week
Gross Income	£37,500	£3,125	£721
Pension (You)£375 Saved!	£1,875	£156	£36
PensionEmployer Added!	£1,125	£94	£22
Taxable Income	£35,625	£2,969	£685
Personal allowance	£12,570	-	-
National Insurance	£1,843	£154	£35
Income Tax	£4,611	£384	£89
Take Home Pay	£29,171	£2,431	£561
Added to Pension	£3,000	£250	£58
Opportunities Found	View My Opportunities →

If you invested £181 each month into an ISA after covering your expenses, you could make £108,173 over 25 years - a whopping +£53,905 on top of what you put in, thanks to compounding returns.

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HMRC Tax rates and rules last updated 6th Apr 2026

Data Scientist Salary Breakdown UK 2026/27

The table below shows typical data scientist salaries across experience levels and regions, alongside estimated take-home pay after income tax and National Insurance. Click any gross salary figure to open it in the calculator.

Level	National Gross	National Take-Home	Monthly (National)	London Gross	London Take-Home
Junior Data Scientist	£35,000	£28,721	£2,393	£48,000	£38,081
Mid-level Data Scientist	£55,000	£42,458	£3,538	£72,000	£52,318
Senior / Principal Data Scientist	£75,000	£54,058	£4,505	£95,000	£65,658

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How Data Scientist Pay Works in the UK

Python is baseline; SQL, cloud platforms (AWS SageMaker, Azure ML), and ML frameworks (scikit-learn, PyTorch) drive salary above median

Financial services employers pay 20–40% more than the tech sector average for equivalent data science experience

Senior and principal data scientists with PhD credentials earn £75,000–£100,000+ at major banks and tech companies

Government and public sector data scientists earn less (£40,000–£65,000) but benefit from job security and Civil Service pension

Contract data scientists command £450–£700 per day; specialist ML engineers can reach £700–£900 per day

Harnham 2024: median London data scientist salary is £68,000; median outside London is £53,000

Income Tax and National Insurance in 2026/27

Like all UK workers, data scientists salaries are subject to income tax and National Insurance (NI) contributions. In the 2026/27 tax year:

Income Tax Bands

Up to £12,570	0% (Personal Allowance)
£12,571 – £50,270	20% (Basic Rate)
£50,271 – £125,140	40% (Higher Rate)
Above £125,140	45% (Additional Rate)

Employee National Insurance

Up to £12,570	0%
£12,570 – £50,270	8%
Above £50,270	2%
-	-

Use the calculator above to see your exact take-home pay after all deductions, including pension contributions and student loan repayments if applicable.

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Explore Your Finances

Model your expenses, project your wealth, and find your path to financial independence.

Disclaimer These tools are for information only and the authors assume no liability for your actions. It is not financial advice and should not be taken as such. To get independent financial advice from a qualified expert, visit Unbiased.co.uk.

Your Monthly Outgoings

Projected Pension

Estimated pension growth over 31 years. Assumes a fund fee of 0.35%. Growth adjusted for inflation.

Wealth & Financial Independence More Info

Financial independence means having enough saved that your expenses will be covered for the rest of your life.

At these income and outgoings levels, you are on track to achieve a sustainable retirement, retiring at age 66.

In today's money, you'll have at least £21,600 / year (£1,800 / month) when you retire at 66 - just from your savings
In real terms (where inflation is not removed), that's £38,340 / year (£3,195 / month)
That means all your outgoings are covered without having to make any further contributions!
All your expenses are covered for your retirement, but your wealth may start to decrease towards old age

Projected Wealth

Estimated income over 50 years, adjusted for inflation, with a 5% annual return and 0.35% yearly platform fee.

Calculations

FI Target = Annual outgoings (£21,600) * Years needed for 4.00% SWR (25.00) = £540,000
Invested annual pension = £3,000
Invested annual surplus = £2,171
Inflation of 2.5% / year
Assumes New State Pension, payments increasing with inflation (2.5% / year)
Assumes student loans last 30 years max
Assumes a flex-drawdown pension for illustration purposes
Assumes you draw down pension up to the higher rate bracket (£50,270), then draw down your S&S ISA
Pension lump sums are not included