Net 30 vs due on receipt vs custom payment terms

Choosing the right payment terms is one of the most critical, yet often overlooked, decisions a small business owner can make. It's not just an administrative detail; it's a strategic choice that directly impacts your cash flow, client relationships, and the overall financial health of your business. This guide breaks down the most common UK payment term structures—from the immediate 'Due on Receipt' to the standard 'Net 30' and the flexibility of custom terms—to help you decide which is the right fit for your business. We'll explore the practical pros and cons of each, who they work best for, and how to enforce them effectively.

What Are Payment Terms and Why Do They Matter?

Payment terms are the conditions you set for when and how you expect to be paid for your goods or services. They form a key part of your contract with a client and should be clearly stated on your quotes, agreements, and invoices.

Their importance cannot be overstated:

• Cash Flow Management: The gap between doing the work and getting paid is a major cause of financial stress for UK SMEs. The right terms can shorten this gap, while the wrong ones can leave you funding your client's business with your own cash reserves.
• Clarity and Professionalism: Clear terms prevent misunderstandings and disputes. They show you are a professional organisation that has considered its financial processes.
• Legal Standing: In the unfortunate event of a dispute, clearly stated and agreed-upon payment terms are your first line of defence. If a payment becomes overdue, your terms define the point from which you can start chasing and, if necessary, apply late payment charges.

Under UK law, specifically the Late Payment of Commercial Debts (Interest) Act 1998, if you don't agree on a payment date for a business-to-business (B2B) transaction, the law says the payment is late 30 days after either the customer gets the invoice or you deliver the goods/provide the service (whichever is later). So, even if you do nothing, a 30-day term is often the default. However, relying on this default is a poor substitute for setting your own clear terms from the outset.

A Deep Dive into "Due on Receipt"

This is the most immediate of all payment terms. It means exactly what it says: the payment is due as soon as the client receives your invoice.

What It Means in Practice

While it sounds instantaneous, "due on receipt" is generally understood to mean "as soon as is reasonably possible". A client receiving this invoice at 4:55 PM on a Friday isn't expected to make a bank transfer within five minutes. It means they should process it in their next payment run, which for a small business or freelancer might be the same or next day. For a larger company, this might still be a few days away. The key is that there is no extended credit period.

Pros of Due on Receipt

• Excellent for Cash Flow: This is the fastest way to get money into your bank account, minimising the time you are out of pocket.
• Simplicity: There are no dates to calculate or track. The invoice is sent, the payment is due.
• Sets a Precedent: It's a clear signal that you expect prompt payment, which can be a good habit to instil in new clients from the very beginning.

Cons of Due on Receipt

• Can Be Perceived as Demanding: Some clients, particularly larger corporations with rigid accounts payable departments, may see it as slightly aggressive or naive.
• Impractical for Large Organisations: Many larger businesses have set payment runs (e.g., once a week or twice a month) and simply cannot process an invoice for immediate payment. An invoice marked "due on receipt" will just be put into their standard queue, making the term meaningless.
• Higher Risk of "Accidental" Lateness: Because there's no buffer, an invoice that is missed or goes to a junk folder is immediately overdue, which can create friction if the client genuinely just didn't see it.

Which Businesses Should Use It?

"Due on receipt" is an excellent choice for:

• Freelancers and Sole Traders: Especially for one-off projects where you don't have an established, long-term relationship with the client.
• Businesses with High Upfront Costs: If you've had to pay for materials or significant expenses to complete a job, you need that cash back quickly.
• New Client Relationships: When you're testing the waters with a new customer, asking for immediate payment reduces your risk.
• Direct-to-Consumer (B2C) Sales: While less common to invoice in B2C, if you do, payment is almost always expected immediately.

Understanding "Net 30" Payment Terms

"Net 30" is arguably the most common payment term in the B2B world. It has become the default expectation in many industries across the UK.

What It Means in Practice

"Net 30" means the full invoice amount is due within 30 calendar days of the invoice date. If you issue an invoice on 5th March, payment is due on or before 4th April. It effectively provides your client with a 30-day, interest-free credit period.

Pros of Net 30

• Industry Standard: It's widely understood and accepted, especially by larger businesses. You're unlikely to face pushback for setting Net 30 terms.
• Accommodates Corporate Processes: It gives larger clients ample time to process the invoice through their internal approvals and fit it into their scheduled payment runs.
• Builds Trust: Offering credit can be seen as a sign of trust and a commitment to a long-term business relationship.

Cons of Net 30

• Significant Cash Flow Strain: This is the biggest drawback. You have delivered the work, covered all your costs (staff, software, rent), and then have to wait a full month for payment. For a small business with tight margins, this can be incredibly painful.
• Increased Risk: The longer the credit period, the higher the chance of something going wrong – your client could face financial difficulty, the invoice could get lost, or the contact who approved it could leave the company.
• Normalises Slow Payment: By making 30 days the standard, it can sometimes encourage clients to treat the 30th day as the target, rather than paying sooner if they are able.

Which Businesses Should Use It?

"Net 30" is a standard and often necessary term for:

• B2B Service Providers: Agencies, consultants, and IT support companies dealing with corporate clients will find this is often the expected norm.
• Wholesalers and Suppliers: Businesses supplying goods to retailers or other businesses often operate on Net 30 or even longer terms.
• Businesses with Strong Cash Reserves: If you have a healthy cash buffer and can comfortably manage the 30-day (or longer) wait, Net 30 is a safe, professional choice.
• Companies with Retainer/Recurring Revenue Models: When you have predictable income streams, you can more easily plan for the 30-day payment cycle from other clients.

Exploring Custom Payment Terms

This is where you can get strategic. Instead of just picking an "off-the-shelf" term, you can tailor your payment structure to suit your project, your client, and your cash flow needs.

Net 7, Net 15, Net 60, Net 90

These are simple variations of Net 30.

• Net 7 or Net 15: A great compromise. You're still offering credit, which seems professional, but you're significantly shortening the payment cycle compared to Net 30. This is an excellent choice for regular work with trusted clients.
• Net 60 or Net 90: These are long credit terms, often demanded by very large corporations or public sector bodies. You should only agree to these if:
  1. The client is extremely valuable and reliable.
  2. The profit margin on the work is high enough to justify the long wait.
  3. Your business has the robust cash flow to sustain being out of pocket for two or three months. Be very cautious here.

Staged Payments / Milestone Payments

For any project that spans more than a month, staged payments are essential for survival. This involves breaking the project cost down into multiple invoices tied to specific deliverables or dates.

• Example for a £10,000 Website Project:
  • Invoice 1: 40% upfront (£4,000) on signing the contract. This covers your initial costs and secures the client's commitment.
  • Invoice 2: 30% (£3,000) on approval of the design mockups.
  • Invoice 3: 30% (£3,000) on completion and go-live.

This structure protects your cash flow throughout the project and reduces the risk of doing a huge amount of work only to have the final payment delayed or disputed.

Early Payment Discounts

A common example is "2/10 Net 30". This means the client can take a 2% discount if they pay the invoice within 10 days; otherwise, the full amount is due within 30 days.

• Pros: It provides a strong incentive for clients to pay you early, which is great for your cash flow.
• Cons: You sacrifice a small percentage of your revenue. You need to ensure your margins can support this. It also adds a little administrative complexity.

This is best used by businesses with healthy profit margins who want to prioritise fast payment over maximising every last pound.

Retainers

For ongoing services like marketing, PR, or IT support, a retainer model is ideal. The client pays a fixed fee each month in advance of the work being done. This is the gold standard for predictable cash flow. You get paid upfront for the month's work, eliminating credit risk entirely for that revenue stream.

Comparison Table: Choosing Your Terms

Term Structure	Best For...	Cash Flow Impact	Client Perception
Due on Receipt	Freelancers, one-off jobs, new clients, high-cost projects	Excellent. Fastest possible payment.	Can be seen as demanding by large companies.
Net 30	B2B services, established client relationships, suppliers	Poor. Creates a 30-day cash flow gap.	Professional, industry standard.
Net 7 / Net 15	Regular work with trusted clients, a good compromise	Good. Shortens the cash flow gap significantly.	Professional and reasonable.
Staged Payments	Long projects (e.g., development, construction, consulting)	Excellent. Matches cash outflow with inflow.	Professional, demonstrates good project management.
Early Payment Discount	Businesses with healthy margins prioritising cash speed	Very Good. Incentivises fast payment.	Favourable, rewards good behaviour.

How to Clearly State and Enforce Your Payment Terms

Choosing your terms is only half the battle. You must communicate them clearly and have a process to enforce them.

Communicate, Communicate, Communicate

Your payment terms should appear in three places, without fail:

1. On Your Quote/Proposal: The client should know the terms before they agree to the work.
2. In Your Contract/Terms & Conditions: This is the legally binding agreement. State the terms, as well as the consequences for late payment.
3. On Every Invoice: The due date should be prominently displayed on the invoice itself. Don't make the client hunt for it. Use clear language like "Payment Due: 25th April 2024" rather than just "Terms: Net 30".

The Legal Bit: The Late Payment of Commercial Debts (Interest) Act 1998

This piece of UK legislation is your most powerful tool. For B2B invoices, it gives you a statutory right to claim interest and compensation if a payment is late, even if you didn't specify this in your terms.

• Statutory Interest: You can charge interest at 8% plus the Bank of England's base rate. You should always check the current base rate when calculating this. The interest is calculated daily.
• Fixed Compensation: You can also claim a one-off compensation payment for each late invoice to cover the cost of chasing. The amount depends on the size of the debt:
  • Up to £999.99: £40
  • £1,000 to £9,999.99: £70
  • £10,000 or more: £100

While threatening legal action should not be your first step, simply referencing these statutory rights in a final reminder email can often be enough to prompt immediate payment from a difficult client. This is general guidance, not legal advice, and your specific contract terms may vary.

The Power of a Consistent Chasing Process

The single most effective way to enforce your terms is to have a relentless, professional, and consistent follow-up process. Manually tracking due dates and sending emails is time-consuming and prone to human error. This is where automation can be a game-changer.

A systematic approach prevents invoices from slipping through the cracks. For example, a good process involves a friendly reminder a few days before the due date, another on the day it's due, and a series of increasingly firm follow-ups once it's overdue. Tools like InvoiceReminder are built specifically for this, connecting to accounting software like Xero, QuickBooks, Sage, or FreeAgent to automate this entire sequence. It ensures every invoice is chased on time, every time, without you having to manually type a single email.

Frequently Asked Questions

What are the default payment terms in the UK if none are agreed?

For business-to-business transactions, if no payment terms are specified in a contract, UK law defaults to 30 days. This means the payment is considered late 30 days after you deliver the goods/service or the client receives the invoice, whichever is later. For public authorities, the default is also 30 days.

Can I legally charge interest on a late invoice in the UK?

Yes. For commercial (B2B) debts, the Late Payment of Commercial Debts (Interest) Act 1998 gives you a statutory right to claim interest (currently 8% plus the Bank of England base rate) and a fixed compensation sum (£40, £70, or £100 depending on the debt size) for each late invoice. You can do this even if it wasn't mentioned in your original terms.

Is "Due on Receipt" legally enforceable?

Yes. If the client has agreed to it as part of your terms of business, it is an enforceable term. In practice, it means payment should be made as soon as is reasonably practical. It doesn't mean the client is in breach of contract if they don't pay within minutes, but it does mean they should not delay processing it until a future payment run.

What's the difference between "Net 30" and "30 days"?

In most cases, they mean the same thing: payment is due within 30 days. However, "Net 30" is more precise industry jargon, almost always meaning 30 calendar days from the invoice issue date. Simply stating "30 days" could theoretically be open to interpretation (e.g., 30 days from receipt of goods), so "Net 30" is the clearer, more professional term to use on an invoice.

My big corporate client insists on 60-day terms. Should I agree?

This is a commercial decision. Before you agree, you must assess the impact on your cash flow. Can you afford to fund the work and your own business expenses for two months while you wait to be paid? If the client or project is exceptionally valuable, you might decide it's worth it. You could also try to negotiate a compromise, such as Net 45, or ask for a portion of the fee upfront to mitigate your risk.

How do I change my payment terms with an existing client?

Communication is key. You can't just change the terms on an invoice without discussion. Have a professional conversation with your client well in advance. Explain that you are standardising your payment processes and that all new projects will be on your new terms (e.g., Net 15). Giving them notice shows respect for the relationship and allows them to adjust their processes.

Take Control of Your Cash Flow

Choosing and enforcing the right payment terms is a fundamental part of running a financially resilient business. By moving away from a one-size-fits-all approach and strategically selecting terms that suit your industry, client type, and cash flow needs, you can significantly reduce financial stress and focus on what you do best.

Once your terms are set, a consistent chasing process is vital. Manually chasing invoices is a drain on your time and energy. That’s why many UK freelancers, small businesses, and accountants use a tool like InvoiceReminder. It connects to your existing accounting software (Xero, QuickBooks, Sage, and FreeAgent) and automates your invoice-chasing emails according to rules you set. This helps you get paid faster without the manual effort. The core email reminder service is currently available at no cost. InvoiceReminder is built by the team behind WeCovr, a UK company authorised and regulated by the Financial Conduct Authority, which has arranged over one million insurance policies.