What is Net-45?

**Net 45 is a payment term on an invoice that means the full amount is due within 45 calendar days of the invoice date.** For example, if an invoice is dated January 1 with Net 45 terms, the payment due date is February 15. The term 'Net' in this context refers to the full or net amount -- not a partial payment, not a deposit, but the complete balance owed. Net 45 occupies an interesting position in the landscape of payment terms. It falls between the US business standard of Net 30 and the extended Net 60 terms commonly used by large enterprises. This makes Net 45 a somewhat specialized term -- more common in specific industries like construction, manufacturing, and mid-market B2B than in general freelancing or small business billing. The 45-day window gives buyers more time than the standard Net 30 to process invoices through their accounts payable systems, review deliverables, and issue payment -- while stopping short of the 60-day terms that can severely strain a vendor's cash flow. For the seller, Net 45 means waiting a month and a half after completing and invoicing work before receiving payment. This delay has real consequences for cash flow planning, particularly for smaller vendors who do not have large cash reserves. One important clarification: Net 45 means 45 calendar days, not 45 business days. This distinction matters significantly. Forty-five calendar days is approximately six weeks and three days. Forty-five business days would be nine calendar weeks -- more than double the wait. Unless a contract explicitly specifies 'business days,' Net 45 is always interpreted as calendar days in US commercial practice.

To understand Net 45 fully, it helps to see it in context against the other common payment terms. **Net 15:** Payment is due 15 days from the invoice date. This is most common for freelancers, small service businesses, and clients with fast payment cycles. It is shorter than the B2B standard and generally only accepted by clients who are motivated to maintain a strong vendor relationship or who have simple AP processes. **Net 30:** Payment is due 30 days from the invoice date -- the de facto US standard for most business-to-business transactions. Net 30 is accepted by the widest range of clients and is the baseline expectation in most commercial relationships. If you are unsure what terms to use, Net 30 is the safe default. **Net 45:** Payment is due 45 days from the invoice date. Used most commonly in construction (material suppliers billing contractors), manufacturing (component suppliers billing assemblers), mid-size B2B companies, and staffing agencies. Net 45 is a compromise term -- the buyer gets more time than Net 30 allows, but the seller is not stretched as far as Net 60 demands. **Net 60:** Payment is due 60 days from the invoice date. Common for large enterprise clients and government contractors. Sixty days is a long time to wait for payment, and it requires the vendor to have sufficient operating reserves to cover expenses for two full months before revenue arrives. **Net 90:** Payment is due 90 days from the invoice date. This term is used by large retailers (including major retail chains that dictate payment terms to their suppliers), healthcare networks, and some government agencies. For a small or medium-sized vendor, Net 90 is essentially financing the buyer's operations for three months at zero interest. The cash flow math is stark. Consider a contractor who sends a $10,000 invoice on January 1. Under Net 30, that money arrives January 31. Under Net 45, it arrives February 15. Under Net 60, it arrives March 1. The 15-day difference between Net 30 and Net 45 may seem small, but if expenses come due in early February -- rent, payroll, materials for the next job -- that 15-day gap can require drawing on a line of credit to bridge. At scale, across multiple clients and multiple invoices, the accumulated difference in payment timing has a material impact on a business's liquidity.

Net 45 is not a universal payment term -- it fits specific industries, client types, and transaction structures. Understanding when it is genuinely appropriate (versus when you are simply accepting unfavorable terms) is critical for cash flow management. **Industries where Net 45 is standard:** Construction: Material suppliers frequently use Net 45 when billing general contractors. The construction payment chain -- from property owner to general contractor to subcontractor to supplier -- is long, and each step introduces delay. Net 45 at the supplier level is an acknowledgment of that chain. Manufacturing: Parts and component suppliers billing manufacturers or assemblers often operate on Net 45 terms. Large manufacturing operations batch their payments and prefer extended terms to match their production and revenue cycles. B2B SaaS and technology: Annual enterprise software contracts sometimes use Net 45 for the initial invoice to give the buyer's legal and finance teams time to process a new vendor relationship. Staffing agencies: Agencies billing corporate clients for temporary or contract workers often use Net 45 because the clients' payroll and AP cycles do not always align with standard Net 30 invoicing. Wholesale trade: Distributors and wholesalers frequently accept Net 45 terms from their customers because the retail buyers need time to sell inventory before paying for it. **When Net 45 is NOT appropriate:** Freelancers providing digital deliverables (design, writing, development) should push back on Net 45 whenever possible -- Net 30 or shorter is more appropriate for their cost structure. Small service businesses with thin cash reserves cannot afford a 45-day receivables cycle. New client relationships where payment history is unknown warrant shorter terms, not longer ones.

If you work with clients who insist on Net 45 terms, there are practical strategies to manage the cash flow impact and reduce financial stress. **Strategy 1: Request a 25-50% upfront deposit.** A 50% deposit paid before work begins effectively cuts your Net 45 exposure in half. You receive half the project value upfront and wait for the remaining 50% under Net 45 terms. Most reasonable clients will agree to a deposit structure for project-based work. Frame it as standard practice: 'My policy is 50% upfront and 50% upon delivery under your preferred payment terms.' **Strategy 2: Factor the payment delay into your pricing.** The time value of money is real. Waiting 45 days for payment instead of 15 days has a cost -- you cannot deploy that capital for 30 additional days. A reasonable approach is to add 5-10% to your standard project rate for clients who require Net 45 terms. This compensates for the cash flow inconvenience and makes Net 45 terms financially neutral compared to your standard terms. **Strategy 3: Explore invoice factoring.** Invoice factoring companies purchase your outstanding invoices at a small discount (typically 1-5%) and pay you immediately. You sacrifice a small percentage of the invoice value in exchange for immediate cash. For high-value Net 45 invoices, this can be worth the cost if it eliminates a cash crunch. **Strategy 4: Maintain a 45-day operating reserve.** The cleanest long-term solution is to build savings equal to 45 days of operating expenses. With that cushion in place, Net 45 invoices create no cash flow anxiety -- you operate on reserves while waiting for invoices to clear, then replenish the reserve when payment arrives. **Strategy 5: Negotiate.** Many companies that initially offer Net 45 terms will agree to Net 30 if you ask diplomatically. A simple approach: 'My standard terms are Net 30 -- would that work for your team?' A significant portion of clients will say yes without hesitation because no one in their AP department genuinely prefers Net 45; it is simply what they defaulted to.

Eonebill takes the math and the follow-up out of managing Net 45 invoices. When you select Net 45 as your payment term in the invoice editor, Eonebill automatically calculates the due date by adding 45 calendar days to the invoice date. You see the exact due date on the invoice before you send it -- no manual date math required. Automated payment reminders are a key feature for Net 45 invoices. Because 45 days is a long time, it is easy for both you and your client to lose track of the due date. Eonebill can send automated reminders at the 30-day mark, the 40-day mark, and on the due date itself -- giving your client three touchpoints before the invoice goes overdue. This reduces the awkward manual follow-up that many freelancers dread. If a client misses the Net 45 due date, Eonebill's late fee configuration kicks in automatically: the specified late fee is calculated and added to the overdue balance without any manual intervention on your part. Create your first Net 45 invoice free at /free-tools/invoice-generator. Eonebill's Pro plan at $19 per month adds an overdue reporting dashboard that shows all outstanding invoices, their due dates, and the number of days each has been overdue -- essential for managing a portfolio of clients with varying payment terms.

Even experienced invoicers make avoidable errors when working with Net 45 terms. Here are the five most common mistakes and how to prevent them. **Mistake 1: Calculating the due date in business days instead of calendar days.** Net 45 means 45 calendar days. If you invoice on January 1, the due date is February 15 -- not 45 business days later, which would be mid-March. Miscalculating the due date creates confusion when you send reminders or follow up on late payment. **Mistake 2: Confusing '45 days from delivery' with '45 days from invoice date.'** Net 45 is measured from the invoice date, not from when the project was delivered or accepted. If your contract specifies '45 days from acceptance' instead of '45 days from invoice date,' that is a different -- and often longer -- timeline. Make sure your invoices and contracts use the same reference point. **Mistake 3: Not sending a reminder at the 30-day mark.** A gentle reminder at day 30 -- two weeks before the due date -- gives the client's AP team time to process the payment before the due date arrives. Many late payments happen not because of bad intent but because the invoice was forgotten. A day-30 reminder dramatically increases on-time payment rates. **Mistake 4: Failing to include late fee language on the invoice.** Without a stated late fee policy on the invoice itself, you have limited recourse when a Net 45 invoice goes overdue. Always include language such as 'Invoices not paid within terms are subject to a 1.5% monthly late fee' in the payment terms section. **Mistake 5: Accepting Net 45 for small projects where the cash flow impact is disproportionate.** On a $200 project, waiting 45 days for payment is an enormous hassle relative to the invoice value. Reserve Net 45 terms for projects large enough that the wait is proportionate -- and push for due on receipt or Net 15 for small engagements.

**What does Net 45 mean?** Net 45 is a payment term meaning the full invoice amount is due within 45 calendar days of the invoice date. For example, an invoice dated March 1 with Net 45 terms is due April 15. The word 'net' refers to the full amount owed -- not a partial payment. **Is Net 45 common?** Net 45 is common in specific industries including construction, manufacturing, B2B wholesale, and staffing. It is less common in freelancing and small service businesses, where Net 30 or shorter terms are the norm. If a client proposes Net 45, it often reflects the standard practice in their industry rather than an attempt to delay payment. **How do I calculate the Net 45 due date?** Add 45 calendar days to the invoice date. Count every day including weekends and holidays -- Net 45 is calendar days, not business days. If the 45th day falls on a weekend or holiday, the due date is typically the next business day, though your contract terms control this. **Can I negotiate Net 45 to Net 30?** Yes, and it is worth asking. Many clients who initially offer Net 45 will accept Net 30 if requested diplomatically. Try: 'My standard terms are Net 30 -- would that work for your accounts payable team?' A significant portion of clients will agree without escalation because the difference of 15 days rarely matters to large companies but significantly improves your cash flow. **What happens if a client misses a Net 45 payment?** Send an overdue notice immediately on day 46. Reference the invoice number, original invoice date, due date, and amount owed. Apply any late fees specified in your invoice terms. If payment does not arrive within 7-10 days of the overdue notice, follow up by phone. Eonebill's Pro plan automates the overdue notice and late fee calculation so you do not have to track this manually.

Net 45 exists within a broader ecosystem of payment terms and invoicing concepts that are worth understanding together. **Net 30** is the most common US B2B payment term, giving clients 30 days to pay from the invoice date. If you are evaluating whether to accept Net 45, compare it against your standard Net 30 terms to quantify the cash flow difference. See /glossary/net-30. **Net 60** is the next step up from Net 45, giving clients 60 calendar days to pay. Net 60 is common for large enterprise clients and government contractors and represents a more significant cash flow challenge for vendors. See /glossary/net-60. **Payment terms** is the umbrella concept covering all agreements about when and how invoices must be paid, including Net 45 and all its variants. See /glossary/payment-terms. **Overdue invoice** refers to an invoice that has passed its due date without payment. A Net 45 invoice becomes overdue on day 46. See /glossary/overdue-invoice for guidance on handling overdue accounts. **Late payment fee** is the penalty applied to invoices not paid by the due date. For Net 45 invoices, including a clearly stated late fee policy discourages slow payment and gives you recourse if a client misses the deadline. See /glossary/late-payment-fee.