Question 1

How is pro-rata salary calculated?

Accepted Answer

Pro-rata salary is your full-time equivalent salary multiplied by the fraction of hours or days you work. For example, if the full-time salary is £30,000 and you work 3 days out of 5, your pro-rata salary is £18,000.

Question 2

Does pro-rata affect my tax code?

Accepted Answer

No, your tax code stays the same whether you work full-time or part-time. The code reflects your personal allowance and circumstances, not your hours.

Question 3

Do I pay less National Insurance on a pro-rata salary?

Accepted Answer

NI is calculated per pay period, so if your pay drops below the Primary Threshold in a given period you may pay no NI for that period. Over the year, lower earnings generally mean lower total NI.