The HCA knowledge library

Find the answer.
Know the next step.

Practical guidance for the questions that come up while running a business or managing your tax. Check a deadline, find a form, calculate an estimate or read a short guide with a link to the official source.

Explore the library

What do you need today?

Six places to start. Practical tools, current references and a clear next step.

HCA guides

Answers for the next thing on your list.

Plain-English starting points, with an official source and a useful next step on every page.

Showing 6 guides

Illustrative close-up of hands reviewing paperwork at a desk
Behind the advice · Illustrative artwork

Official tools and references

Go straight to the source.

These links open current GOV.UK guidance. Their content and availability are maintained by the relevant government service.

Need an answer for your situation?

Let’s work it through together.

A guide can point you in the right direction. Your circumstances decide the right action.

Talk to HCA
01 / Your service

Tell us what you need.

Choose a service, add your details and send your enquiry to our team.

What would you like help with?
Not sure? Select “Help me choose”.