£
46 weeks accounts for holidays and between-contract gaps.
Using defaults: £110 umbrella fee, 5% pension, £500 expenses/month

Advanced Options

Typical range: £80-150 per month.
Auto-enrolled workplace pension. Typical: 3-5%. Set to 0 if opted out.
Limited company only: travel, equipment, software, etc.
+1.5% profit boost if you're VAT registered (£90k-£230k turnover). FRS lets you keep the difference between what you charge clients (20% VAT) and what you pay HMRC (typically 14.5% for IT contractors).
Note: Automatically disabled if turnover exceeds £230k.