You can still pay your employees that don't have a National Insurance number – Tax and National Insurance contributions will still be calculated and deducted from their pay.
Keep in mind that Tide Payroll will report the missing number to HMRC using the employee’s name, address, date of birth, and gender.
So, you'll need to encourage them to apply for a National Insurance number as soon as possible. While there’s no strict time limit, getting a National Insurance number quickly helps in keeping records accurate and avoiding HMRC issues.