State Pension calculator: how many NI years do I need?

How this calculator works

You usually need 35 qualifying years of National Insurance for the full new State Pension of £241.30 a week, and at least 10 years to get anything. Each year in between is worth about 1/35 of the full amount.

The calculator adds the qualifying years you have now to the full years you are likely to add before State Pension age, caps the total at 35, and works out your share of the full rate. A year counts if you earned enough while working, paid voluntary contributions, or got National Insurance credits, for example while caring for someone or claiming certain benefits.

This is a simplified estimate. If you paid National Insurance before April 2016, your amount is based on a “starting amount” worked out from your old record. If you were contracted out of the old additional State Pension through a workplace scheme, you may need more than 35 years. Your GOV.UK State Pension forecast is the accurate figure.

What qualifying years are worth

In 2026 to 2027, each qualifying year adds about £6.89 a week, or £359 a year, to the new State Pension. A year of voluntary Class 3 contributions costs £956.80.

So a gap year paid at the Class 3 rate pays for itself after about 2.7 years of drawing your pension, if it increases your pension at all. The Future Pension Centre can tell you whether paying would make a difference.

Why this matters if you go part-time

Going part-time usually does not cost you qualifying years, as long as your earnings stay above the National Insurance lower earnings limit. Stopping work completely before State Pension age can.

If you plan to stop paying National Insurance at, say, 60 and your State Pension starts at 67, you could miss 7 years. If you already have 35 or more, that may not matter. If you are short, part-time work, credits or voluntary contributions can fill the gap. Use the “age you stop paying NI” box to test different plans.

Worked example

This is an example, not a real person. Pat is 54 with 22 qualifying years and plans to keep working part-time until State Pension age at 67.

• Years to come: 13, taking Pat to 35 by State Pension age.
• Estimate: the full £241.30 a week, about £12,548 a year in today’s money.
• If Pat stopped at 60: 28 years, about £193 a week. Seven years short, each worth about £359 a year for life.