Part 36 Offer Calculator

How to use this calculator

Select who made the offer (claimant or defendant), enter the offer amount, dates, and judgment amount. The calculator shows the costs consequences under CPR Part 36.

Costs consequences under CPR r.36.17 where a party beats (or fails to beat) its own Part 36 offer at trial.

Who made the offer?

Offer and judgment details

Part 36 offer amount (£)

Date of service of offer

Judgment/award amount (£)

Date of judgment

Costs to end of relevant period (£)

Costs from expiry of relevant period (£)

Personal injury claim — QOCS applies (CPR 44.13–44.16)

When ticked, any costs the defendant may enforce against the claimant are capped at the aggregate of the orders for damages, interest and costs in the claimant's favour (CPR r.44.14).

Enhanced interest rate (r.36.17(4)(a)/(c))

% above base rate Fixed rate

% above base (max 10)

Base rate is the Bank of England base rate, applied automatically over the period (and varied where it changed).