Free tools
One question each. Straight answers, with sources. Nothing you type is saved or sent anywhere.
£252
Marriage Allowance checker
A year, just sitting there for lots of couples. See if you qualify and how many years you can still backdate.
Check now →£1,000
Do I need to tell HMRC?
Side hustle, reselling or gigs. Find out if you need to register, and your exact dates.
Check now →Pick one
Allowance or expenses?
Two numbers in. See which route gives the smaller figure on your return.
Work it out →Coming soon
Council tax band check
Is your 1991 band right?
Coming soon
Tax code decoder
What 1257L is telling you.
Coming soon
Am I in Making Tax Digital?
The April 2027 test.
Coming soon
Child Benefit checker
Claim it, or the charge?
Deadline reminders, free.
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