Free Tools for UK Freelancers
Every tool below is free. The Invoice & Chasing Template Pack is a paid download (£12). The calculators, the invoice template generator and the day rate calculator run entirely in your browser; the AI visibility checker fetches the public pages of the site you enter — nothing is stored.
Frequently asked questions
Do the calculators send my numbers anywhere?
No. The calculators, the invoice template generator and the day rate calculator run entirely in your browser — your invoice amounts, dates and client details never leave your device.
What does the AI Visibility Checker do with the URL I enter?
It fetches the public pages of that site (the page itself, plus the standard files at the site root such as robots.txt, llms.txt and sitemap.xml) and scores eight technical readiness signals. Nothing is stored, and private or local addresses are rejected.
Will a high score get my site into AI answers?
Not necessarily. The checker measures whether your site is easy for AI systems to read and cite — it never queries ChatGPT, Claude or any AI assistant, so it cannot promise citations. Good content still does the heavy lifting.
Are the tools really free?
The calculators and generators are — no account, no trial, no paywall. The Invoice & Chasing Template Pack is a paid download (£12).
Late Payment Interest Calculator
Work out the statutory interest owed on an overdue invoice — Bank of England base rate + 8% — plus the £40 / £70 / £100 fixed compensation per invoice.
Calculate interest →Payment Deadline Calculator
Enter your invoice date and payment terms to get the exact due date — and see the day statutory interest and compensation start running if the client pays late.
Find my deadline →Freelancer Invoice Template Generator
Fill in your details and line items to build a clean, professional UK invoice — VAT on or off, payment terms, due date and bank details — then print it or save it as a PDF.
Build my invoice →Freelancer Day Rate Calculator
Work out what day rate to charge: enter the income you want, your business costs and billable days — get your day rate and hourly rate.
Work out my rate →MCOL Court Fee Estimator
Work out what a Money Claim Online case costs: enter what you are owed plus any interest and get the exact court fee band, and whether to file online or by post.
Estimate my court fee →Payment on Account Estimator
Work out your Self Assessment payments on account: enter your profit for the year just ended to see each instalment, due dates, and the first-year 150% January bill.
Estimate my payments →MTD Quarterly Update Checker
Check your Making Tax Digital quarterly update totals before you file: enter last time's figures plus this quarter's, and see the year-to-date income and expenses to enter.
Check my update totals →Invoice & Chasing Template Pack — £12
Nine copy-paste chasing emails, a pre-send invoice checklist and an overdue-invoice tracker — the ready-to-use companion to the free invoice generator above.
Get the pack →AI Visibility Checker
Check whether your website gives AI crawlers the signals they need — llms.txt, robots.txt, sitemap, structured data — with a 0–100 readiness score and a plain-English fix list.
Check my site →