# Learn: the terms behind your business bills and rewards

Plain definitions for business owners: the taxes and references on the bills a UK business pays, and the airline currency its spend can earn.

## Terms

- [What is PAYE?](https://www.rewardspilot.co.uk/learn/paye): PAYE explained for employers: what it is, who must register, what the monthly bill includes, and when it is paid.
- [What is VAT?](https://www.rewardspilot.co.uk/learn/vat): VAT explained for businesses: what it is charged on, the three rates, when a business must register, and how input and output VAT work.
- [What is National Insurance?](https://www.rewardspilot.co.uk/learn/national-insurance): National Insurance explained for employers: employee and employer Class 1 contributions, category letters, and how it is paid with PAYE.
- [What is a UTR number?](https://www.rewardspilot.co.uk/learn/utr-number): The Unique Taxpayer Reference explained: what it is, who gets one, where to find it, and what it is used for.
- [What is Corporation Tax?](https://www.rewardspilot.co.uk/learn/corporation-tax): Corporation Tax explained: who pays it, what it is charged on, how it is worked out and when it is due.
- [What are business rates?](https://www.rewardspilot.co.uk/learn/business-rates): Business rates explained: which properties they apply to, how the bill is calculated from rateable value and the multiplier, and who collects them.
- [What is a VAT registration number?](https://www.rewardspilot.co.uk/learn/vat-registration-number): The VAT registration number explained: its format, where to find it, where it must appear, and how it differs from other HMRC references.
- [What is a VAT return?](https://www.rewardspilot.co.uk/learn/vat-return): The VAT Return explained: what it reports, how often it is due, the deadline, and what happens when it is late.
- [What is a VAT invoice?](https://www.rewardspilot.co.uk/learn/vat-invoice): The VAT invoice explained: when one must be issued, what it must show, and why the customer needs it.
- [What is Avios?](https://www.rewardspilot.co.uk/learn/avios): Avios explained: whose currency it is, what one is worth, how it is earned and spent, and how a UK business earns it on its bills.

---

Canonical URL: https://www.rewardspilot.co.uk/learn
Markdown version: https://www.rewardspilot.co.uk/learn.md
Last reviewed: 2026-10-01
Contact: info@rewardspilot.co.uk · 0161 850 2526
YTY LTD trading as RewardsPilot, company number 11880920. Payroll services provided under company number SC576748.