National Insurance Gaps and State Pension: How to Check and Fix

Why NI Gaps Matter

Your State Pension is based on your National Insurance record. You need 35 qualifying years for the full State Pension (£221.20 per week for 2025/26) and at least 10 qualifying years to receive any State Pension at all.

Gaps in your record — years where you did not pay enough NI — directly reduce your State Pension. Each missing year costs you approximately £6.29 per week (£327 per year) in pension income for the rest of your retirement.

How Gaps Occur

Low Self-Employment Profits

If your self-employment profits are below the Small Profits Threshold (£6,725 for 2025/26), you may not be paying Class 2 NI. Without Class 2 contributions, you do not get a qualifying year.

Gaps Between Employment and Self-Employment

When transitioning from employment to self-employment, there can be a period where you are not paying NI. If this period spans a full tax year, it creates a gap.

Not Registering for Self Assessment Promptly

If you start self-employment but delay registering with HMRC, you may miss NI contributions for the intervening period.

Time Abroad

Years spent living or working abroad may not generate UK NI contributions.

Low Earnings While Employed

If you were employed but earned below the Lower Earnings Limit, your employer may not have deducted NI.

How to Check Your NI Record

1. Go to GOV.UK and search for "Check your National Insurance record"
2. Sign in with your Government Gateway or GOV.UK Verify account
3. View your record year by year, showing:
   • Full years (qualifying)
   • Years with gaps
   • Years you can fill with voluntary contributions

Should You Fill Gaps?

Almost always yes, if the gap can be filled at the Class 2 voluntary rate. Here is why:

The Maths

• Cost to fill one gap year (voluntary Class 2): £179.40
• Additional State Pension gained: approximately £327 per year
• Payback period: approximately 7 months of pension payments

After the payback period, you receive the additional £327 every year for the rest of your life. If you retire at 67 and live to 85, that is £5,886 in additional pension from a £179.40 investment.

When It Might Not Be Worth It

• You already have 35 qualifying years (additional years will not increase your pension)
• The gap can only be filled at a more expensive rate (Class 3 voluntary: £17.45 per week / £907.40 per year)
• You are very close to State Pension age with enough qualifying years already

How to Fill Gaps

For Recent Years

You can make voluntary NI contributions for gaps within the last six years. Contact HMRC or pay through your online account.

For self-employed people, voluntary Class 2 contributions are usually the cheapest option at £3.45 per week.

For Older Years

There have been special arrangements allowing people to fill gaps going back further. Check GOV.UK for the latest deadlines, as these extended deadlines may expire.

Automatic Credits

You may have National Insurance credits that fill gaps automatically — for example, if you claimed certain benefits, were a carer, or were on Jobseeker's Allowance.

Preventing Future Gaps

• Ensure your self-employment is registered with HMRC
• If your profits are below the Small Profits Threshold, make voluntary Class 2 contributions
• Check your NI record annually
• When changing between employment and self-employment, ensure there are no uncovered periods

How Accounted Helps

Accounted tracks your self-employment profits, helping you stay aware of your NI position:

• Profit tracking — see whether your earnings are above the Small Profits Threshold
• NI awareness — understand your Class 2 and Class 4 obligations

Check our pricing for details.

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A small payment now means a bigger pension later. Sign up for Accounted and keep your self-employment finances visible.