Instant calculators to help you price your work, understand your tax, and know your worth. Free, no login, no download.
Work backwards from your income goal and expenses to find your minimum viable hourly or day rate. Supports GBP, USD, and EUR.
Open Calculator →Calculate your self-employed income tax, Class 4 NI, and take-home pay for 2025/26. Includes Scottish rates, student loan, and pension toggles.
Open Tax Calculator →See the real difference between inside and outside IR35 from the same gross day rate — and calculate exactly how much extra you need to charge.
Open IR35 Calculator →