I want to file my UK corporate tax return (t600). Is there an integration with another software platform to support this?

Thanks for posting here in the Community, @peter-ritchie.

There isn't any software that supports corporation tax in QuickBooks Online at the moment. I'd suggest speaking to an accountant to get advice on how to record this.

Meanwhile, you can also visit and check with HMRC Commercial software suppliers for Corporation Tax. There you can find a list of software published on this website which authorized to submit a corporation tax (t600 or CT600).

Please let me know if you have further inquiries. We're always glad to help. Have a great weekend!