Invoice Payment Terms: Net 14, Net 30 and Getting Paid Faster in Australia

The short version

• Net 30 means paid in 30 days; net 14 in 14. The number is the days from the invoice date, and it should be written clearly on the invoice.
• You choose the terms, but the law sets limits. A business sets its own terms; if none are stated, payment is due immediately, and the law caps how long large businesses can take to pay small ones.
• Getting paid is mostly follow-up. Send the invoice fast, make the due date and bank details obvious, and chase it before and just after the date.

Late payment is one of the most common cash-flow problems for small Australian businesses, and much of it starts with an invoice that never made the terms or the follow-up clear. This article sets out what the shorthand on an invoice actually means, what a business should write on its own invoice, and the steps that genuinely improve the odds of being paid on time. It is general information, not legal or financial advice, and current limits should be confirmed with the Australian Taxation Office or a professional before a decision relies on them.

What net 14 and net 30 actually mean

The “net” terms on an invoice are a simple shorthand. Net 30 means the full amount is due 30 days after the invoice date. Net 14 means it is due in 14 days. The number is always the days from the invoice date, not from when the client receives the invoice or from the end of the month.

A plain arithmetic example makes it concrete. An invoice dated the first of the month with net 30 terms is due by the end of that month. The same invoice with net 14 is due by the fifteenth. Two other terms sit in the same shorthand: “end of month” means the invoice is due at the end of the month in which it is dated, and “on receipt” means payment is due immediately, with no credit period at all.

The terms are not decoration. They are the agreed time the buyer has to pay, and they set the point at which a payment becomes late. An invoice that carries no stated term still has a legal default: payment is due immediately. That is why the terms deserve a deliberate decision rather than an omission.

The date that starts the clock is the invoice date, not the date the client opens the email. That is why sending an invoice promptly matters, and why a term should always be paired with a clear date on the document rather than left as arithmetic for the client to do. In practice the terms are settled when the work is agreed, so both sides know what to expect before the invoice ever arrives.

Who sets the terms, and what the law says

A business is free to set its own payment terms on its invoices, within the law. That freedom is real, and it means a small business can choose shorter terms, such as net 14, to protect its own cash flow. The terms must, however, be clear on the invoice itself, because a client cannot be expected to meet a term they were never shown.

The law also places limits on the terms in some relationships. For small-business-to-small-business contracts, Australian law sets a maximum time frame for payment terms, commonly 30 days, and caps the number of days that can pass before interest may be charged on a late payment. Separate rules apply to large businesses, which in many cases must not use payment terms that exceed the statutory maximum when dealing with small businesses. The precise limits change from time to time, so this article deliberately does not quote them. A business should confirm the current limits with the Fair Work Ombudsman, the Australian Small Business and Family Enterprise Ombudsman, or business.gov.au rather than rely on a figure that may have moved.

Two practical points follow. First, setting a term at net 30 is common and lawful for most small-business invoices, and net 14 is lawful too. Second, a term is only as good as the follow-up behind it, which is the subject of the sections below. The legal framework gives a business the tools; using them is an operational habit.

One clarification prevents a common confusion: the rules about maximum terms concern how long the buyer has to pay, and they are separate from the question of charging interest. Charging interest on a late payment is governed by the contract and the law, and the safe course is to state any interest term clearly on the invoice and confirm that it is permitted before relying on it.

What to write on an invoice

The content of the invoice matters for two reasons: it must satisfy the tax rules where GST applies, and it must make payment as easy as possible for the client.

Where GST is charged, the document must be a valid tax invoice. That means it carries the word “tax invoice”, the seller’s name and Australian Business Number, the buyer’s name and address, the date of issue, a description of the goods or services supplied, and the amount. For GST purposes the invoice must show the GST amount, or state clearly that the price includes GST. A document missing the ABN or the GST amount is not a valid tax invoice, which can create problems for the buyer’s claim and for the seller’s record keeping. The GST question, when it applies and how it changes the price, is covered in the site’s guide to GST versus no GST.

The payment line deserves as much care as the tax line. Write the due date as an actual date, not only “net 30”, so there is no arithmetic for the client to do. Include the bank details in full, and state any late-payment interest term in plain words. The business name and ABN on the invoice should match the legal entity that is issuing it, which is a point that connects directly to the choice of business structure; the site’s guide to sole trader versus company explains why the name on the invoice is tied to the structure behind it.

None of this requires paper. An email carrying a PDF tax invoice is fine, and many small businesses use invoicing software that produces a compliant tax invoice automatically and records when it was sent. What matters is that the document contains the required elements and reaches the client in a form they can keep, act on and pay from.

The steps that actually get you paid faster

The operational heart of getting paid is not the terms, although they help. It is the sequence of small actions around the invoice, and each one is within the control of the business.

Invoice promptly. Send the invoice the day the work is done or the goods are delivered, not at the end of the month. A client pays in the order the invoices arrive, and an invoice that arrives late joins the back of the queue.

Make the due date and payment details impossible to miss. Put the due date in the subject line, on the first page, and again in the body. If the client has to hunt for the bank details, the payment waits.

Send the invoice in a form the client can act on. A PDF attached to an email is the baseline; an online invoice the client can open and pay in one click is better. The fewer steps between the client and the payment, the faster the payment arrives.

Schedule a friendly reminder a few days before the due date. Most late payments are forgetfulness, not refusal, and a polite note before the date prevents most of them. Follow up the day after the due date if the payment has not arrived, in the same friendly register. Escalate to the formal late-payment steps only when the friendly steps have failed. This is the pattern that separates businesses that get paid on time from businesses that hope.

A small habit that compounds is invoicing on a regular cycle. If every job is invoiced the day it finishes, the client’s accounts team comes to expect your invoices and they move through faster than one that arrives at an unpredictable moment. Consistency is its own form of follow-up, because a predictable invoice is a payable invoice.

What to do when a client does not pay

When a payment is genuinely late, work through the escalation in order. Check first that the invoice was received and that there is no dispute about the work. A surprising number of “late” payments are simply invoices that went to the wrong address or a client who believes the work was not as agreed.

Confirm there is no dispute, then send a reminder. If that does not bring payment, send a more formal notice, in writing, stating the amount, the original due date and any interest that has accrued under the terms. The law provides late-payment options for small businesses dealing with other businesses, including the ability to charge interest and recover costs in some circumstances, and the Payment Times Reporting framework adds further protections for small businesses supplying large ones. These are general descriptions; the current rules should be checked before they are relied on.

Only when the formal notice fails should a business consider a registered debt-collection step or professional advice. The register matters throughout: firm, clear and unemotional, never aggressive. A client who is slow to pay is often a client who is struggling, and a calm process preserves both the debt and the relationship.

Throughout the process, keep a written record of the invoice date, the due date, the reminders sent and any responses. If the matter ever reaches a formal stage, that record is the evidence of what was agreed and what was chased, and it is the difference between a clear case and a muddle.

Payment terms as part of healthy cash flow

Payment terms are one lever in the cash-flow machine, and they work best alongside the other levers: invoicing on time, chasing on time and knowing the numbers. Terms alone do not fix cash flow, and generous terms can quietly undermine an otherwise sound business. The wider discipline is the subject of the site’s guide to the cash-flow mistakes an accountant can spot, which is worth reading alongside this one.

For a business at the stage where invoicing habits are being set, the planning companion is the one-page business plan, which helps a small business keep the operational basics, including how it gets paid, in front of it. Cash flow is not a finance-department concern. For a small business it is the daily reality, and the terms on an invoice are one of the few parts of it the owner controls directly.

The process of getting paid

The terms on the invoice matter less than the follow-up behind them. Set clear terms, invoice fast, and treat the reminder as part of the job, because getting paid is a process, not a hope.

Write the due date as a date, make the bank details obvious, and work the friendly follow-up before and just after the due date. Use the legal protections the law gives small businesses when the friendly steps fail, and confirm current limits with the regulators rather than assuming a figure. An invoice that is clear, prompt and followed up is an invoice that gets paid, and that is the whole difference between a business that manages its cash flow and one that is managed by it.

Sources: Australian Taxation Office (ATO), tax invoices and record keeping · business.gov.au, payment terms and getting paid on time · Australian Small Business and Family Enterprise Ombudsman (ASBFEO), late payment and the Payment Times Reporting framework