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Parents who missed out on National Insurance (NI) credits after opting out of child benefit will have to wait longer to fill the gaps in their records, after a new government fix was delayed by a year.
The National Insurance replacement credits service, originally due to launch in April 2026, is now expected in April 2027. It’s designed to help parents and carers who didn’t claim child benefit – often due to the High Income Child Benefit Charge (HICBC) – but in doing so missed out on NI credits that count towards their state pension.
Here Which? explains what the service will offer, how it will work and what the delay means for parents looking to plug gaps in their records.
Child benefit is a weekly payment for parents or carers, worth £27.05 for the eldest child and £17.90 for each additional child in the 2026-27 tax year.
As well as providing extra income, claiming child benefit also gives you National Insurance (NI) credits if you’re responsible for a child under 12. These credits help fill gaps in your NI record and protect your entitlement to the state pension if you take time off work.
The issue stems from changes introduced in 2013, when the High Income Child Benefit Charge (HICBC) came into force. This means higher earners may have to repay some or all of the benefit through the tax system.
As a result, many parents chose not to claim child benefit to avoid the charge. However, this had an unintended consequence. By not claiming, they also missed out on NI credits, often without realising.
Because child benefit claims can only be backdated for three months, some parents who later realised they could claim the credits without receiving payments have been left with years of missing NI credits.
You need 35 full years of NI contributions to get the new full state pension and you need 10 years to receive anything at all. To address this, the government announced a ‘replacement credits’ system in April 2023. This aimed to help parents who failed to claim child benefit in time.
While originally slated for an April 2026 rollout, the service is now delayed until April 2027. The current delay is reportedly down to the complex technical nature of the project.
Since the 2024-25 tax year, the threshold for the HICBC has been £60,000.
If you or your partner earn above this amount, the highest earning must pay back 1% of the benefit for every £200 of income over the limit. The partner with the highest income is liable for the charge – regardless of who receives the benefit. Once income reaches £80,000, the tax charge equals the full amount of the benefit.
To avoid the tax charge, you can opt out of receiving payments while remaining registered, which means you keep your NI credits.
Before the changes, the charge started at £50,000 and the benefit was lost entirely once income reached £60,000.
For those who do have gaps in their NI record, HMRC says most will not be affected by the delay because they will still be able to apply for NI credits once the service becomes available in April 2027.
HMRC said: ‘We can reassure parents and carers that when the service launches in April 2027, they will still be able to claim credits going back to January 2013, meaning no one will miss out on them.
‘Because those who benefit from the service will be families with children under the age of 12 since 2013, we expect very few to have reached state pension age by this April.’
However, some people may see a short-term impact on their state pension. This is most likely to affect people who are already receiving their state pension or will reach state pension age before April 2027.
This is because any missing NI credits may not be added to their record in time to increase their pension payments during that period

Make every penny count. Get the best deals, avoid scams, and grow your savings with expert guidance for only £49 a year.
Join Which? MoneyIf you believe you will suffer financial loss due to the delay, HMRC says you can ask it to look at your case. To be considered, you will need to meet the following criteria, which include:
Requests can be made through HMRC’s complaints process, which can be submitted online, by post or over the phone. The details you’ll need to include in your complaint can be found on Gov.uk.
HMRC says it will review each case individually. If it agrees you have suffered a financial loss, it will calculate a payment to reflect the impact on your state pension up to April 2027. Any payments are expected to be made after the replacement credits service is introduced in April 2027.
You can check your state pension forecast and NI record online using the government’s ‘Check your State Pension’ service.
This will show you how much you’re on track to receive, how many qualifying years you have, and whether there are any gaps in your NI record.
If you do have gaps, the service may also tell you if you can fill them by making voluntary contributions or claiming credits.
To use the service, you’ll need a Government Gateway account. You can find it by searching ‘check your state pension’ on Gov.uk.
Alongside aiding your state pension entitlement, there are other benefits to claiming child benefit as a parent or carer. These include:
Find out more: two-child benefit cap lifted from April 2026