Do your company’s accounts and tax return in one place.
Keep your records, prepare your year-end accounts and your Corporation Tax return, and file both, without learning several different systems or typing the same figures in twice.
Free to get started, including filing. No card required.
Everything your company has to do each year
Keep the books
Import a bank statement as CSV, Excel or OFX, check the account suggested for each line, and post it. Raise invoices and record expenses in the same place.
See what’s due
The dashboard shows when your accounts are due, and the filings page lists what’s due in the next 90 days and anything overdue.
Year-end accounts
Prepare micro-entity or small company accounts from the books you’ve kept, then file them with Companies House.
Corporation Tax
The tax computation starts from the profit in your accounts. Check it, then file your CT600 with HMRC.
Confirmation statement
File your yearly confirmation statement, and update the registered office, directors or company name when they change.
Used HMRC’s free filing service?
HMRC closed its free Company Tax Return service on 31 March 2026, so your CT600 now has to go through software. A4O Accounts files it for you, with your accounts and computation attached. What changed
Log the work on site. Invoice it from the job.
Record hours, materials and mileage against each job from your phone, and add photos of receipts as you go.
Hours are charged at the job’s rate and materials with your markup, so you always know what’s left to bill. When the work is done, turn the job into a draft invoice and check it before it goes out.
What you’ll need
Have these to hand and you can go from sign-up to your first filing in one sitting.
Company number and authentication code
The six-character code Companies House posted to your registered office. How to find it
Your company’s UTR
The 10-digit Unique Taxpayer Reference from HMRC. How to find it
Government Gateway login
The user ID and password you use for your company’s HMRC online account. It’s used when you file and not stored. How to find it
Your bank statements
Downloaded from online banking as CSV, Excel or OFX. How to find it
File your next return free.
Stuck on a filing? Email us and someone who knows the forms will help. We reply within one working day.
No card required. Email us