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how much national insurance should i pay

You pay National Insurance (NI) based on your income, your job status (employed vs self‑employed), and your NI category, using rates set for each tax year in the UK. There isn’t one fixed amount everyone pays — it scales with what you earn.

Key idea: NI is earnings‑based

  • If you earn below a minimum level , you usually pay no NI , though you might still get NI credits in some cases.
  • Above that threshold, you pay a percentage of your earnings in set income bands.
  • The bands, thresholds and percentages can change each tax year (for example, 2025–26 and 2026–27 have their own thresholds and rates).

Employed: rough structure

For a standard employee (Category A, which most people are), NI is broadly:

  • Nothing on income up to the primary threshold (around the level of the personal allowance).
  • A main rate on earnings between the primary threshold and an upper earnings limit.
  • A lower rate on earnings above that upper limit.

GOV.UK and other professional tax sites show that, in recent and upcoming tax years, the pattern looks like:

  • Thresholds around £12,570 a year before NI starts for employees.
  • A main employee rate between that amount and about £50,270 a year, then a smaller rate above that.

Simple weekly example

One GOV.UK example: an employee in Category A earning £1,000 a week pays:

  • £0 NI on the first £242.
  • 8% on earnings between £242.01 and £967.
  • 2% on earnings above £967.
    This comes out to £58.66 NI for that week.

Self‑employed: different classes

If you’re self‑employed, NI is normally via Class 4 on profits (and sometimes voluntary contributions):

  • You pay a percentage on profits between a lower profits limit and an upper profits limit, and a smaller percentage above that.
  • Recent figures show Class 4 being charged on profits from around £12,570 to £50,270 at one rate, then 2% above that.

There are also Class 3 voluntary contributions to fill gaps in your NI record, but recent changes have made these noticeably more expensive per missing year.

How to see your exact NI

Because NI depends on your personal situation, the most accurate way to know how much National Insurance you should pay is to:

  • Use the official NI calculator for the current year (via the UK government’s online tools).
  • Check a National Insurance contributions calculator that lets you enter your annual or monthly income and see an NI breakdown for employees or self‑employed.
  • Look up the latest rates and thresholds for the exact tax year you care about (for example, 2025–26 or 2026–27).

Quick forum‑style takeaway

If your pay is below the starting threshold , you’ll pay £0 NI.
Once you’re above it , expect to lose a small percentage of each extra £1 you earn in NI, with a lower rate on very high earnings.

For a precise figure, you would need to plug in:

  • Whether you’re employed or self‑employed.
  • Your gross pay/profits and how often you’re paid.
  • Your NI category letter if you’re employed.

If you share your annual income, whether you’re employed or self‑employed, and the country part of the UK you’re in, a tailored step‑by‑step estimate can be worked out using those current bands and rates.