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How do I complete the CT600 for a long period of accounts? (Practice users)

Article ID: 919
Last updated: 17 Oct, 2019

If your accounts cover a period of over 12 months, you'll need to complete the CT600 for two periods, as follows:

  1. Prepare the accounts for the full period and generate an XBRL version.
  2. Apportion the profit/loss into a 12-month period and the remaining days – using days meets the HMRC guidelines.
  3. Create the first (12-month) period return in TaxCalc (see instructions below).
  4. Create the second (short) period return in TaxCalc (see instructions below).

How to create the first period return

  1. Open Practice Manager.
  2. Right-click on the client.
  3. Select Open in Tax Return Production.
  4. Click on New Return.
  5. Enter the 12-month period.
  6. Click on Create.
  7. Go to Accounts and Computations.
  8. Under I am attaching Accounts..., tick Relating to a different period.
  9. Enter the apportioned figures into Computations – or if you're using Accounts Production, go to Import accounts to pro-rata the figures accordingly.
  10. Complete the rest of the return.
  11. Attach the XBRL accounts (for the full period).

How to create the second period return

  1. Open Practice Manager.
  2. Right-click on the client.
  3. Select Open in Tax Return Production.
  4. Click on New Return.
  5. Change the End date to reflect the short period.
  6. Click on Create.
  7. Open the return.
  8. You MUST indicate to HMRC that accounts have already been sent.
  9. Go to Accounts and Computations.
  10. Under I am attaching Accounts..., untick both Relating to this period and Relating to a different period.
  11. Select Submitted with accompanying return… from the drop-down menu – you don't need to send the accounts again.
  12. Enter the apportioned figures into Computations – or if you're using Accounts Production, go to Import accounts to pro-rata the figures accordingly.
  13. Complete the rest of the return.
Article ID: 919
Last updated: 17 Oct, 2019
Revision: 7
Views: 7995
This article was:  


Also listed in
folder Tax Return Production -> CT600 Corporation Tax Return