HM Revenue & Customs has said it will offer support to businesses affected by the collapse of Carillion.
The tax office said it will offer support to businesses contracted to Carillion which are concerned about their ability to pay their tax through its business payment support service.
This service connects businesses with HMRC staff who can offer help and advice on a range of tax problems.
They can also agree installment arrangements if a business is unable to pay its tax on time following the collapse of Carillion earlier this week.
It can also suspend any debt collection proceedings, review penalties for missing statutory deadlines and reduce any payments on account.
The service can also agree to defer payments due to short-term cash flow difficulties.
HMRC can also provide workers and their families with cash support through the tax credits system.
After unsuccessful talks with its lenders and the UK government, Carillion made an application on Monday (15 January) for compulsory liquidation.
The accountancy firm PWC has been appointed as administrator.
The business payment support service is available seven days a week between 8am and 8pm on weekdays and until 4pm at the weekend on 0300 200 3835.