Since the start of the scheme in March 2020 a total of 11.7m jobs have been supported by the CJRS at various times and the scheme was used by 1.3m employers. During the first three months of operation, 61% of these employers furloughed staff as lockdown rules were in force.

The government has confirmed that when the Coronavirus Job Retention Scheme closed on 30 September, furlough was being claimed by 410,000 employers which had a total of 1.16m workers off work.

The closing figures show that the government had spent £70bn on the furlough scheme, which acted as an essential buffer to avert widespread unemployment during the pandemic.

Now that the scheme has been closed for nearly three months, and all final claims have been submitted, it is worth noting that HMRC will be working hard to analyse claims to identify mistakes, errors and fraudulent claims.

The speed at which the scheme was introduced means that it was fairly easy to make mistakes and it is essential to advise HMRC if any errors in reporting and claims are spotted.

David Yewdall, partner in the employer solutions team at Tilney Smith & Williamson, said: ‘Concluding the process of reviewing claims and payments made through the CJRS is expected to take some time and we know that HMRC is investing significant amounts of resource within their Taxpayer Protection Taskforce in tackling fraudulent and widespread errors in claims made.

‘We are already seeing numerous enquiries raised into suspected overclaims. Due to the complexity of the CJRS support calculations, combined with how fast the CJRS was rolled out, even businesses that had full confidence in the accuracy of their claims have received HMRC enquiry letters.

‘Businesses are strongly advised to act ahead of receiving an enquiry from HMRC. A review of your CJRS claims now by employment tax experts could avoid a longer, more expensive, process later, even if claims were made in good faith. Should an error or overclaim be identified during a review, we would usually recommend that a voluntary disclosure is made to HMRC. Businesses that proactively manage their tax affairs and seek to rectify errors without undue delay are considered lower risk by HMRC. A voluntary disclosure could therefore impact the amount of any penalty, or whether it is to be levied at all.

There were 329,000 employees on furlough continuously since March 2020, and they accounted for 28% of the total jobs on furlough at 30 September 2021. The wholesale and retail sector had the most jobs supported by the CJRS with 2.25m employments on furlough at any time since the start of the CJRS. Only 93,500 employments were furloughed in the finance and insurance sector.

London consistently had the largest number of employments on furlough. A total of 1.64m employments were on furlough at any time in London during the lifetime of the scheme. There were 232,700 employments on furlough in this region at 30 September when the scheme closed, 6% of the total eligible. Just over half (51%) of employments on furlough at 30 September had estimated annual pay of £15,000 or less.

Yewdall added: ‘With Covid cases now surging again, there remains a real question as to whether the Treasury will need to bring back some form of the furlough scheme in the new year. Many businesses are already seeing a drop in demand as some of their customers choose to stay at home and the government has not ruled out introducing further restrictions.’