If you've made personal contributions that amount to more than 100% of your earnings, then you might be able to claim a workplace pension refund. For example, if your earnings over the last tax year totalled £25,000, but your contributions to a personal pension amounted to £30,000 after tax relief was added, you would receive a refund of £4,000. This equates to the £5,000 overpayment, less the 20% tax relief paid back to HMRC.nnNote that any workplace pension refund only covers your personal contributions, not those of your employer. It is also worth bearing in mind that if your pension plan provides tax relief at source (whereby your contributions are taken after tax) and you earn less than £3,600, you will only be able to claim a workplace pension refund on contributions over and above that amount.