How do I carry back partnership losses?

To carry back a partnership loss for the current year to a previous year, you need to make a manual adjustment to your SA100 tax return for the year in which the loss occurred. You don't need to re-submit your return for the previous year and this cannot be done via the SA800 tax return.

To calculate the manual tax adjustment figure, you should:

1. Open the SA100 return for the tax year that you're carrying the loss back to.
2. Make a note of the tax figure shown in the top left.
3. Browse to the Partnership supplementary pages and input the loss amount you are offsetting in the box for Please enter any losses brought forward from earlier years set off against this year's profit (box 17 on HMRC Forms mode).
4. Make a note the new tax figure.
5. Close the earlier year return without saving the changes.
6. Take the second tax figure away from the first to find the adjustment.

You then need to enter the manual tax adjustment.

SimpleStep mode

1. Go to Your Work > Partnership Management > Partnership – Trading Losses > Carry it back to previous years and set off against income or capital gains.
2. Declare that you want to carry the loss back.
3. Go to Working out your tax > Tax Adjustments > Adjustments to an earlier year that decrease your tax.
4. Enter the adjustment figure.

HMRC Forms mode (Full/Short Form)

1. Go to Partnership > Page 2 > Box 23.
2. Declare that you want to carry the loss back.
3. Go to Tax Calculation > Page 2 > Box 15.
4. Enter the adjustment figure.

To view the adjustment, select Summary from the left-hand menu and click on Tax Payment/Repayment Summary.