Money & Side Hustle Glossary: Terms Explained

Plain-language definitions of the 10 terms that come up most often in side hustle, freelance and investing advice

Most money jargon exists to compress an idea, not to exclude people — but a term you have not met before does exactly that until someone explains it. Each entry below defines the word, shows how the number behind it is actually worked out, and says what changes it. No entry is a dictionary paragraph: if a term has arithmetic underneath it, the arithmetic is on the page.

All terms

Every definition on the site, in alphabetical order.

Where the terms get used

These words turn up throughout the calculators and guides, which is why they are defined rather than assumed. If a calculator asks for something you do not recognise, the definition is here and the calculator page states its assumptions too.

Frequently asked questions

Why do these definitions include maths?

Because most of these terms are a number with a name attached. Knowing that MRR stands for Monthly Recurring Revenue is much less useful than knowing that annual plans are divided by twelve and that churn sets the ceiling on how big it can get.

Is any of this financial advice?

No. Everything here is educational. Consult a licensed professional before making a financial, tax or business decision.

Official sources

Tax rules, limits and pay data change. Check the current figures with the primary source before acting on them.

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