Pay your staff, with tax and NI worked out.
Clients Assistant runs your company's payroll: add your employees, choose the pay date, and see each person's pay, PAYE tax and National Insurance worked out with the 2026 to 2027 rates. Confirm the pay run when it's right.
Sending to HMRC opens soon. The Full Payment Submission (FPS) and Employer Payment Summary (EPS) are built to HMRC's 2026 to 2027 specification, and we're applying for HMRC recognition. Until sending opens here, send them with HMRC's free Basic PAYE Tools or your current payroll software.
From first employee to confirmed pay run
Set up your payroll
Add your pay cycles, departments and job titles, and the pay items you use: salary, hourly pay, bonuses, pension contributions and deductions.
Add your employees
Enter each employee's start date, tax code, National Insurance number and category, and mark directors so their National Insurance is worked out the director's way.
Run and confirm the pay
Choose the pay date, check each person's pay, tax and National Insurance line by line, then confirm the pay run. A pay date that's already confirmed can't be paid twice.
PAYE and NI the way HMRC works them out.
Tax is worked out on the cumulative basis from the start of the tax year, or week 1/month 1 where the code says so, with HMRC's 2026 to 2027 tax tables. National Insurance uses the 2026 to 2027 thresholds and rates for each employee's category letter, with directors on an annual earnings period.
- Tax codes including K codes and week 1/month 1
- Employee and employer National Insurance by category letter
- Directors' National Insurance on an annual earnings period
- Hourly pay worked out as hours × rate
- Pension contributions taken off taxable pay under a net pay arrangement
- Each person's pay broken down line by line before you confirm
Everything a small payroll needs
Employees
Personal details, start dates, departments and job titles, tax codes, National Insurance numbers and categories, and directors.
Pay cycles
Weekly, fortnightly, four-weekly or monthly, each with its own pay dates.
Pay items
Salary, hourly pay, bonuses, pension contributions and deductions, set up once for each employee.
PAYE tax
HMRC's 2026 to 2027 tax tables, cumulative or week 1/month 1, including K codes.
National Insurance
Employee and employer contributions with the 2026 to 2027 thresholds and rates, including directors.
Pay runs
Choose the pay date, review everyone's pay line by line, and confirm. Each pay date is confirmed only once.
Absences
Sick leave, paternity leave and adoption leave, with the dates and the paperwork received.
FPS and EPS (soon)
The Full Payment Submission and Employer Payment Summary, built to HMRC's 2026 to 2027 specification. Sending to HMRC opens soon.
One simple price per company.
The plan covers one company's payroll, with up to 5 users who can work on it.
All prices exclude VAT. Customers are charged 20% VAT on top at checkout — so £6 a month is £7.20 including VAT.
- Employees, pay cycles and pay items
- PAYE tax and National Insurance worked out
- Pay runs and absences
- Up to 5 users
- Everything in the monthly plan
- One payment a year
Questions people ask before switching
Yes. Tax is worked out with HMRC's 2026 to 2027 tax tables, on the cumulative basis or week 1/month 1 as the tax code says, including K codes. Employee and employer National Insurance use the 2026 to 2027 thresholds and rates for the employee's category letter, and directors' National Insurance is worked out on an annual earnings period.
Not yet. The Full Payment Submission and Employer Payment Summary are built to HMRC's 2026 to 2027 specification, and we're applying for HMRC recognition. Until sending opens here, send them with HMRC's free Basic PAYE Tools or your current payroll software, using the figures from your Clients Assistant pay run.
Yes. Set the hourly rate and the hours on the employee's pay items, and their pay is worked out as hours × rate.
Weekly, fortnightly, four-weekly and monthly. Each pay cycle has its own pay dates, and you choose the date when you start a pay run.
Yes. Record sick leave, paternity leave (birth or adoption) and adoption leave for each employee, with the dates and whether you've received the paperwork.
Each pay run is confirmed once. A pay date that's already confirmed can't be saved or paid again, so the same pay isn't counted twice in the year's figures.
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. The payroll plan includes up to 5 users for the company.
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.
Running the books too?
Book Keeping
Invoices, bills, bank and reports for your company, with your first 20 invoices free.
Clients Assistant Book Keeping →Corporation Tax
Prepare your CT600 and accounts for free, then file the CT600 with HMRC.
Clients Assistant Corporation Tax →