Disputing Your NI Record

Key facts

Contact the HMRC National Insurance Contributions Office to dispute errors in your NI record.
You’ll need evidence such as payslips, P60s, or bank statements to support your claim.
HMRC can check employer records going back many years to verify your contributions.
Corrections can take several weeks to several months depending on the complexity of the case.
If an employer failed to pay your NI, HMRC can pursue the employer and still credit your record.

When to Dispute Your NI Record

You should dispute your NI record if you believe it contains errors that could affect your State Pension entitlement or benefits. Common reasons include:^[1]

Missing qualifying year — a year shows as a gap when you were working and paying NI
Partial year — a year shows as “not full” when you believe it should be full
Employer contributions not recorded — you can see NI was deducted on your payslips but it doesn’t appear on your record
Missing NI credits — you were claiming benefits that should have provided credits but they weren’t applied
Wrong NI number linked — contributions may have been recorded under a different NI number

Check first, then dispute. Before raising a dispute, review your NI record online at gov.uk/check-national-insurance-record. Click into individual years to see the detail. What appears as a gap may actually be a year when you genuinely had low earnings.^[1]

Gathering Evidence

The stronger your evidence, the faster HMRC can resolve the dispute. Useful documents include:

Document	What It Proves
P60	End-of-year summary showing total earnings and NI deducted by that employer
Payslips	Monthly/weekly NI deductions — especially useful if P60 is missing
P45	Earnings and NI up to the date you left an employer
Employment contract	Proves you were employed during the disputed period
Bank statements	Salary payments showing employer name and amounts
Benefit award letters	Proves you were entitled to NI credits
Child Benefit records	Proves entitlement to Class 3 credits for parents

Don’t have the documents? If you don’t have payslips or P60s, HMRC can investigate using their own records. Employers are required to submit Real Time Information (RTI) and retain payroll records. Even for historic periods, HMRC may have employer submissions on file.^[2]

How to Contact HMRC

There are several ways to raise a dispute about your NI record:^[3]

By Phone

Call the NI helpline on 0300 200 3500 (Monday to Friday, 8am to 6pm). Have your NI number ready and be prepared to explain which years are disputed and why.

By Post

Write to:

HM Revenue and Customs
National Insurance Contributions Office
BX9 1AN

Include your full name, NI number, date of birth, and details of the disputed years along with copies of any evidence.

Online

You can send a message through your HMRC personal tax account. Navigate to “Check your National Insurance record,” select the year in question, and use the online contact option.

When the Problem Is the Employer

If NI was deducted from your pay but your employer failed to submit it to HMRC, the position is as follows:^[2]

Your record is protected — if you can show NI was deducted from your pay, HMRC should credit your record even if the employer didn’t pay
HMRC will investigate the employer — they may issue penalties and demand the unpaid NI
Insolvent employers — even if the employer has gone out of business, your record should be corrected based on available evidence

If the Employer Disputes Your Claim

If the employer states they did not employ you or did not deduct NI, HMRC will investigate further. They may ask for additional evidence from you and check the employer’s RTI submissions. If the evidence supports your claim, your record will be corrected regardless of what the employer says.

Missing NI Credits

NI credits should be applied automatically in many cases, but sometimes they are not recorded. Common situations:

Credit Source	How to Correct
Child Benefit (child under 12)	Contact the Child Benefit Office — credits should have been automatic
Universal Credit / JSA	Contact DWP — they notify HMRC of credits
Carer’s Allowance	Contact the Carer’s Allowance Unit
Approved training courses	Contact the training provider for confirmation, then HMRC
Specified Adult Childcare credits	Apply to HMRC using form CA9176 if a family member provides childcare

How Long Does a Dispute Take?

Processing times depend on the complexity of the issue:

Type of Dispute	Typical Resolution Time
Missing NI credit (straightforward)	2–6 weeks
Employer contributions not recorded	6–12 weeks
Employer investigation required	3–6 months
Historical records (10+ years ago)	3–12 months

If HMRC Doesn’t Resolve Your Dispute

If you’re unhappy with HMRC’s response, you can escalate:^[4]

Ask for a review — request that a different HMRC officer reviews the decision
Formal complaint — use HMRC’s complaints procedure at gov.uk/complain-about-hmrc
Adjudicator’s Office — an independent body that reviews HMRC complaints
Parliamentary Ombudsman — if the Adjudicator cannot resolve the issue, your MP can refer the case

Frequently Asked Questions

How do I dispute an error in my NI record?

Contact the HMRC National Insurance Contributions Office by phone (0300 200 3500), by post, or through your personal tax account online. Explain which tax year you believe is incorrect and provide any supporting evidence.

What evidence do I need to dispute my NI record?

The most useful evidence includes P60s, payslips showing NI deductions, employment contracts, bank statements showing salary payments, and P45s. If you don’t have these, HMRC can investigate using their own records and employer submissions.

What if my employer didn’t pay my NI to HMRC?

If your employer deducted NI from your pay but failed to pass it to HMRC, HMRC can still credit your NI record. They will pursue the employer for the unpaid contributions separately. Your record should not suffer because of your employer’s failure.

How long does it take to correct an NI record?

Simple corrections (such as adding a missing credit) can be resolved in a few weeks. More complex cases involving employer investigations can take several months. HMRC will write to you with updates.

Sources

Check your National Insurance record — GOV.UK
National Insurance: introduction — GOV.UK
Contact HMRC — GOV.UK
Complain about HMRC — GOV.UK