Clients Assistant — Book Keeping for small companies
Clients Assistant
Book Keeping

Your invoices, bills and bank, in one place.

Clients Assistant keeps your company's books: send invoices, record bills and payments, reconcile your bank, and see your profit and balance sheet whenever you need them. At the year end, the same figures go straight into your Corporation Tax return.

Your first 20 invoices free, no card needed
Then £10 + VAT a month for a company, or £100 + VAT a year
Figures flow into your accounts and CT600
Start for free
Sales this month£12,480.00
Unpaid invoices7 · £4,210.00
Bills to pay3 · £1,365.50
Bank balance£18,902.44
BankReconciled to 30 Sep 2026
How it works

From first invoice to year-end figures

01 / set up

Set up your company

Set your financial year, chart of accounts and VAT rates, then add your customers, suppliers, products and services.

02 / record

Invoice and record

Email invoices to your customers, record your bills, receipts and payments, and post journals for anything else.

03 / report

Reconcile and report

Reconcile your bank, see who owes you and who you owe, and run your trial balance, balance sheet and income statement. At the year end, start the Corporation Tax return from the same books.

Everything a small company's books need.

Sales, purchases, bank and journals all post to one ledger, so your reports are always up to date. When it's time for the Corporation Tax return, there's nothing to re-type: the year's figures come straight from your books.

  • Sales invoices and credit notes, sent to your customers by email
  • Invoice each customer in their own currency
  • Aged debtors and creditors, so you know who to chase and what's due
  • Invite colleagues or your accountant by email to keep the books with you
  • Optional two-step sign-in: a code from an authenticator app as well as your password, so a stolen password alone can't open your account
Current£2,640.00
30 days£1,120.00
60 days£450.00
90+ days£0.00
Total owed to you£4,210.00
What's included

The whole set of books

Sales

Customers, invoices, credit notes and receipts, with aged debtors and customer balances.

Purchases

Suppliers, bills, credit notes, payments and merchant receipts, with aged creditors and supplier balances.

Bank and cash

Bank accounts, a cash book, bank payments and receipts, and bank reconciliation.

Journals

Journal entries for adjustments, with a check that lists any transaction that doesn't balance.

Reports

Trial balance, balance sheet, income statement and a bank reconciliation report, whenever you need them.

VAT on every line

Your VAT rates set up once, and VAT worked out on each invoice and bill.

Products and services

Keep a list of what you sell, so each invoice line fills itself in.

Into your CT600

At the year end, the Corporation Tax return and accounts start from your books, with nothing re-typed.

Pricing

Start free. Subscribe when you're ready.

Use every part of the bookkeeping free, with your first 20 sales and purchase invoices on us and no card needed. Subscribe to add more invoices; everything you've entered stays yours either way.

All prices exclude VAT. Customers are charged 20% VAT on top at checkout — so £10 a month is £12.00 including VAT.

Try it
Free
Every bookkeeping page, with your first 20 sales and purchase invoices free.
  • Customers, suppliers, products and services
  • Bank, cash book and reconciliation
  • All the reports
  • No card needed
Start for free
Up to 10 companies
£95+ VAT /month
For groups and accountants: one subscription covers the books of up to 10 companies.
  • Monthly£95 + VAT
  • Annually (2 months free)£950 + VAT
  • Everything in One company, for each company
  • Switch between companies from one login
Get started

Questions people ask before switching

Yes. Every company can use all of the bookkeeping free, and its first 20 sales and purchase invoices are on us, with no card details needed. After that you subscribe to add more invoices.

Everything you've entered stays available: your customers and suppliers, your invoices, your bank records and your reports. To add more sales or purchase invoices, subscribe in Billing Subscriptions. The menu shows how many free invoices you have left.

Yes. When the year ends, start the company's Corporation Tax return from your Clients Assistant books, and the year's figures come straight from the ledger into the accounts and the CT600. Preparing the return is free; filing it needs a Corporation Tax plan.

Yes. Send an invoice to your customer by email from the Invoices page.

Yes. Choose the invoicing currency for each customer, and the invoice is raised in that currency.

Yes. An admin invites each person by email from the Users page. They accept by creating an account, or by signing in with an existing Clients Assistant account. Each plan includes a set number of users per company; a company without a subscription has only the person who set it up.

Your account is protected by your password, and you can add two-step sign-in for free. Turn it on under Settings > Business Setup > Sign-in Security: after your password, you enter a 6-digit code from an authenticator app on your phone, such as Google Authenticator or Microsoft Authenticator, so someone who learns your password still can't sign in. It's optional, and you can turn it off at any time. If you lose your phone, an admin of your company or Clients Assistant support can reset it, and we email you whenever that happens.

Filing taxes too?

Corporation Tax

Now live: prepare the CT600 and accounts from your books for free, then file the CT600 with HMRC.

Clients Assistant Corporation Tax →

MTD VAT

File your company's VAT returns with HMRC, with your first return free.

Clients Assistant MTD VAT →