Savers will receive an extra four months to increase the state pension

Savers are given an extra four months to increase the state pension after complaints about a malfunction in DWP telephone lines

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Savers have four extra months to pay to increase their state pensions after complaints that the Department for Work and Pensions (DWP) phone lines have been blocked before the deadline.

The deadline for AOW top-ups has been extended after major issues identified with the system by This is Money and we revealed last week that people could be given more time to increase their pensions

HM Revenue & Customs (HMRC) has extended the date by which depositors must fill in gaps in their national insurance records between 2006-7 and 2016-17 from April 5 to July 31.

Treasury finance secretary Victoria Atkins says HMRC and the DWP have experienced a recent ‘surge’ in customer contact as depositors rush to make top-ups.

This is Money exclusively revealed the phone lock for pension supplements last month.

Pension boost: HMRC has extended the date by which savers must fill gaps in their national insurance data between 2006-7 and 2016-17 from 5 April to 31 July

Pension boost: HMRC has extended the date by which savers must fill gaps in their national insurance data between 2006-7 and 2016-17 from 5 April to 31 July

Frustrated callers have complained that it’s nearly impossible to get through DWP phone lines or, if they do, find staff can’t give them crucial information about their state pension forecast.

The full state pension is paid to those who have paid NI contributions for at least 35 years.

Anyone falling short can pay to fill gaps for specific years.

It costs £15.85 for a missing week of NI, which equates to £826.50 for a whole year.

This increases your pension by £275 a year, or £5,500 over a 20-year pension.

Normally you can only pay for the last six years, but thanks to a special concession, savers can now fill gaps for ten years, until 2006.

This addition was supposed to end in April, but has been extended to make sure people don’t miss out.

> AOW expansion: read our guide to boosting your pension

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