This article is relevant to Sage Corporation Tax Desktop product, if you are using the Online product please see

Carry back losses to prior year/use losses brought forward in Sage Corporation Tax Online

1. Go to UK Trades and select the trade you have set up then click Edit.
2. Click the Losses tab, then Losses this period.
3. Enter the amount you are carrying back into the box 'Relieved in previous period' or 'Relieved in earlier periods'.
   

   TIP: If you are carrying back a loss to an earlier period such as the second or third year back (normally for cessation) then enter into 'Relieved in earlier periods'.

4. Click 'Tax Return Disclosure Information'  and then click 'Return Information'.
5. Tick the box 'claim or relief affecting an earlier period'. 
6. Enter bank account details for the repayment in Tax Payments Repayment Details.

This will then show HMRC the amount that you are carrying back and also notify them that a repayment is due. You will not see the repayment amount within the software as this is handled by HMRC

CAUTION: If you'd already tagged your computation, it must now be re-tagged.