Opsliy

← Blog

Blog

Setting up your paperwork on day one

Thirty minutes now saves the scramble in month three, when a customer asks for something you never set up.

A delivery note, an invoice and a receipt, the invoice showing a balance due

Last updated 30 July 2026

The small business paperwork most people set up in a panic is the paperwork they then live with for years. Half an hour at the start, before the first customer, buys a system rather than a habit.

Six decisions, made once

  1. What name goes on your documents, and does it match your bank account?
  2. What is your numbering scheme, and where does the count live?
  3. What are your standard payment terms?
  4. Are you registered for tax, and does that change the document?
  5. Where do saved files go?
  6. Who, apart from you, might need to find any of this?

None takes long. All of them are annoying to change later, once documents carrying the old answer are already out there.

Build the templates before the first job

Fill in your details once, save the file, and every document afterwards starts from it. Do this for the two or three documents you will actually use rather than all eleven.

Most businesses start with an invoice and a receipt. Add a quote when customers start asking for prices in writing.

A free invoice template you can edit covers what to fix and what to leave blank, which matters: a template carrying last month’s customer is how the wrong name goes out.

Pick a numbering scheme and write it down

A short prefix and a number that only rises. INV-0001, QTE-0001, REC-0001, each its own sequence.

The part people skip is where the count lives. A note on your phone is fine. What is not fine is trusting memory, because the first duplicate number breaks reconciliation on both sides. Numbering your documents covers the two mistakes worth avoiding.

Set up the folder now

Empty folders take ten seconds and save an afternoon later:

business/
  templates/     _invoice.json  _quote.json  _receipt.json
  sent/          inv-0001-acme.pdf ...
  sheets/        inv-0001-acme.json ...

Two copies of everything: the PDF you sent, and the editable sheet you can reopen. Nothing is stored for you on this site, so this folder is the entire record.

Decide your terms before you need them

Payment terms, deposit policy, what happens when a job changes. Write two or three lines and put them in the template.

Deciding these in the moment, with a customer waiting, produces terms you regret. Payment terms, explained covers what the common ones actually mean.

Know which document does what

The most common early mistake is sending the wrong one: an invoice where a quote belonged, or a statement where an invoice belonged.

The eleven documents a small business needs is a short tour of which belongs at which moment, and the order they usually appear in a job.

Tax, once, properly

Find out your registration threshold and what a compliant document looks like where you trade. If you are registered, your number usually has to be on the face of the document and tax shown separately from the net.

If you are not, leave the tax line off entirely. This is the one area worth a short conversation with an accountant rather than a template.

A second person should be able to find things

Even if there is no second person yet. Write four lines somewhere shared: where the blanks live, where sent documents go, what the next number is, who to ask before issuing a credit note.

That page is what makes handing over possible later. Invoicing for a small business covers what changes once someone else raises documents.

What you do not need yet

Not accounting packages, not subscriptions, not a bookkeeper, for most people billing a handful of customers a month. Those become worth it at a scale you will recognise when you reach it.

The document set most businesses actually start with

Eleven documents exist here. Most businesses need three in the first month and never open the rest.

You doYou need
Quote, then work, then billQuote, invoice, receipt
Sell goods and deliverInvoice, delivery note, receipt
Work on other people’s sitesQuote, job card, invoice
Buy stock to resellPurchase order, goods received note

Set up templates for the row that matches you. Add the others when a customer asks for one, which is the only reliable signal that you need it.

Write your bank details once, carefully

Account name, number, branch, and whichever mobile money or transfer reference your customers actually use. Then check them, because a wrong digit here is the one typo that costs you a week and a phone call.

They go in the template, not on a note you copy each time.

Decide what a job looks like on paper

Before the first customer, write down the sequence you intend to follow. Four lines is enough:

Enquiry   -> quote, valid 30 days
Accepted  -> deposit invoice, then work
Complete  -> job card signed on site
Billed    -> invoice, then receipt on payment

That sequence is what you will drift from under pressure, and having written it down is what lets you notice.

The thing everyone skips

Fill in one complete document for a fictional customer, print it, and read it on paper. Not on the screen.

You will find something: a missing phone number, a logo that prints grey, a total that is not obvious enough. Fifteen minutes now, or six months of sending it. Printable invoices covers the print settings worth checking at the same time.

Half an hour, starting now

Open the invoice maker, fill in your own details, and save the file. That is the first and most useful thirty minutes of admin you will do.