State Pension has been underpaid due to repeated human errors which were almost inevitable amid complex rules and outdated IT systems, a spending watchdog has said in a new report.
The Department for Work and Pensions (DWP) estimates that it underpaid 134,000 pensioners and those it can trace will be paid an average of £8,900, the National Audit Office (NAO) said.
Most of those affected are likely to be women and the true value of the underpayments will only become clear once the DWP has completed its administrative review of all cases, the watchdog added.
An estimated £339 million will go to pensioners who should have benefited from their spouse's or civil partner's National Insurance (NI) record.
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