UK Salary Sacrifice Calculator 2026/27
Estimate the take-home impact of pension salary sacrifice, including Income Tax and employee NI savings.
UK Student Loan Repayment Calculator 2026/27
Estimate UK student loan repayments across Plan 1, Plan 2, Plan 4, Plan 5 and Postgraduate loans using current thresholds.
Marriage Allowance: Who Can Claim It?
A plain-English guide to who can claim UK Marriage Allowance, when it helps, when it does not, and how much it can save.
Side Hustle Tax: Trading Allowance vs Expenses
Compare the UK trading allowance with actual expenses and learn which route may reduce taxable side-hustle profit more.
Inside vs Outside IR35: What Changes Your Take-Home Pay?
Inside and outside IR35 change tax route, expenses, pension strategy, risk, and how much of a contractor day rate reaches your bank account.
ChatGPT Plus vs Claude Pro: Which Costs More in 2026?
ChatGPT Plus and Claude Pro are both $20/month in the US, but annual billing, usage style, and upgrade paths change the value equation.
UK Dividend Tax Calculator 2026/27 — Take-Home for Directors
Free UK dividend tax calculator for limited company directors. Live results for 2026/27 and 2025/26, England/Wales/NI and Scotland, with full salary + dividend breakdown.
UK Marriage Allowance Calculator 2025/26 — Are You Eligible & How Much?
Free UK Marriage Allowance calculator. Check your eligibility, see exact annual saving (up to £252) and backdated savings (up to £1,008). 2025/26 HMRC rates.
UK IR35 Calculator 2025/26 — Inside vs. Outside Take-Home
Free UK IR35 calculator. Side-by-side comparison of contractor take-home pay inside IR35 (umbrella/PAYE) vs. outside (limited company). Day rate, expenses, Corporation Tax, dividends — 2025/26 HMRC rates.
UK Side-Hustle Tax Calculator 2026/27 — What You Really Owe HMRC
Free UK side-hustle tax calculator for 2026/27. Estimate income tax and Class 4 National Insurance on Vinted, Etsy, freelance, Airbnb, or other side income on top of your salary.
LLM Token-to-Cost Calculator (2026) — GPT-4o, Claude, Gemini & 13 More Models
Convert words, characters, or token counts to API dollar cost across 16 LLMs — GPT-4o, Claude Sonnet 4, Gemini, Llama, DeepSeek and more. Paste a prompt or scale to millions of calls.
AI Subscription Cost Calculator — How Much Are You Really Spending on ChatGPT, Claude, Cursor & More?
Reveal how much your AI subscriptions really cost each month, year, and over five years, then copy a shareable AI stack score for ChatGPT, Claude, Cursor, Midjourney, Perplexity, and more.