Written agreements versus handshake deals
A signed contract or invoice with agreed terms is the strongest starting point — it establishes the amount and the due date without much argument. A verbal agreement between friends or family is enforceable too, just harder to prove and on a shorter clock: two years instead of four. If there was never anything in writing, text messages, emails, or a payment app history referencing the loan or the work often end up doing the job a contract would have.
What actually moves a case like this
Partial payments and promises
If someone paid part of what they owed, or promised to pay "next month" and didn't, keep that in writing — a partial payment is itself evidence that a debt was acknowledged, which can matter both for the case and for how the statute of limitations clock is counted.
Why the exact amount matters
Small claims moves fastest when the number is precise and explainable: the invoice total, plus any amount actually agreed to for late fees or interest — not a rounded-up estimate. A judge who can trace your number back to a document will move through the case a lot faster than one who has to ask where a figure came from.