If you use the DEBTDEBTORS case type in Proclaim then you can update the Bank of England base rate by following the steps below:
Open Proclaim Desktop
Enter the case with the reference of BASERATECONTROL
Click UPDATE
In the field Base Rate Effective From, enter 18/12/2025
In the field New Base Rate, enter 3.75
Click Create - Base Rate, then click Save
Late Payment Interest Rate Changes
As we have reached the final rate decision of the year, the routines which calculate the Late Payment Interest Rate will also need adjusting.
Instructions for this can he found here;
Proclaim: Debt Debtors case type Late Payment Interest updates : December 2025 | Proclaim | Access UK Help Centre