Over six million people will receive a tax credit renewals pack before the end of June.
HMRC is urging employers to encourage their staff to renew tax credits online before the 31 July deadline.
If any of your employees miss the deadline they risk payments stopping or being overpaid – overpayments would have to be paid back.
Tax credit helplines will get very busy as the deadline approaches so it makes sense to encourage your employees to fill out their forms as soon as they get their renewals pack, says HMRC.