7 min read
In the early days of a startup, paying the bills is usually a pretty simple affair. There aren't many vendors, and the founder often knows exactly what the company has purchased, what it costs, and when payment is due. An invoice arrives, someone pays it, and everyone gets back to work.
As the company grows, that informal approach becomes harder to maintain. Software subscriptions renew automatically, contractors bill at different intervals, and department heads make purchasing decisions that finance may not hear about until the invoice arrives. Before long, a vendor is following up on an overdue payment that three different people thought someone else was handling.
That's where accounts payable (AP) comes in. A well-managed AP process helps a startup keep track of its financial obligations, pay vendors accurately and on time, and understand how upcoming payments will affect available cash.
What Is Accounts Payable?
Accounts payable is the amount a company owes suppliers and other creditors for goods or services purchased on credit. It typically includes unpaid vendor invoices for expenses such as consulting, software, marketing services, and office supplies.
Suppose your startup receives a $15,000 invoice from a development agency for work completed in October, with payment due in November. Under accrual accounting, assuming the amount qualifies as an expense, the company generally records the expense and a corresponding accounts payable liability in October. When the invoice is paid in November, the liability and cash balances decrease. The cost belongs to October's financial activity, even though the cash doesn't leave the bank until the following month.
The term accounts payable also describes the work involved in receiving, reviewing, approving, recording, and paying vendor invoices. A company can have an accurate AP balance in its accounting system and still struggle to get invoices approved and paid on time.
Why Does Accounts Payable Matter for Startups?
Founders tend to watch revenue, payroll, and the bank balance closely. Vendor obligations can receive less attention until something goes wrong.
Imagine a startup with $400,000 in the bank. Leadership is considering a $100,000 investment in a new marketing initiative, and the cash balance suggests there's plenty of room. But the company also has $125,000 in vendor invoices coming due over the next 30 days, along with payroll and other commitments. Without a reliable view of upcoming payments, that marketing decision could leave the business with considerably less cash than expected.
Maintaining accurate AP records gives leadership a clearer picture of what the company owes and when those payments are due. It also helps preserve vendor relationships. A contractor who regularly has to chase payment may become less enthusiastic about taking on the next project, and some suppliers may impose late fees or tighten their payment terms.
For startups using accrual accounting, incomplete AP records can also distort financial reporting. Missing invoices may leave expenses and liabilities understated, making profitability and the company's financial position appear stronger than they actually are.
How Does the Accounts Payable Process Work?
Most startups don't need an elaborate system for managing vendor invoices, but they do need a consistent process. Each invoice should move through a few basic steps, with clear responsibility for handling it along the way.
1. Receive and Record Vendor Invoices
Start by establishing where invoices should be sent. A dedicated AP email address or centralized invoice management system is often more reliable than having vendors send bills to whichever employee hired them.
Each invoice should be reviewed for basic information, including the vendor, invoice number, amount, description of goods or services, and payment terms. It should then be entered into the accounting system promptly, using the appropriate accounting treatment.
The IRS recommends maintaining invoices and other supporting documents to substantiate business transactions. Keeping those records organized makes them easier to retrieve for financial reporting, tax preparation, or an audit.
2. Verify That the Invoice Is Correct
Before approving an invoice, confirm that the company actually received the goods or services and that the amount agrees with the purchase agreement, contract, or other authorization.
For a consulting engagement, this might mean checking the invoice against the statement of work and agreed billing schedule. For inventory purchases, the process may involve matching the invoice to a purchase order and receiving records.
This review can also catch duplicate invoices. A vendor might email a bill and then send the same invoice through an automated billing platform. Without a way to recognize the duplication, both copies could end up in the payment queue.
3. Route the Invoice for Approval
The person who requested a purchase isn't always the person authorized to approve payment. Startups should establish approval rules based on spending authority, transaction size, and the type of expense. A $200 software renewal probably doesn't need the same review as a $40,000 consulting engagement.
As a company grows, separating invoice approval from payment authorization becomes an important safeguard. The Association of Certified Fraud Examiners provides resources on internal controls and fraud prevention, including analytical tests that can help organizations identify potentially suspicious transactions.
Small teams may not have enough employees to separate every responsibility completely. In those cases, an independent review of payment activity by a founder, controller, or another authorized person can provide an additional check.
4. Schedule and Make Payments
Once an invoice is approved, it should be scheduled according to the agreed payment terms.
Paying every invoice immediately isn't necessarily the best approach. Some vendors offer early-payment discounts, while others allow 30 or 60 days. The company should consider the contractual terms, available cash, and the value of preserving working capital.
A regular payment schedule also makes the process easier to manage. Instead of responding to invoices individually throughout the week, the finance team can review approved payments together and identify any that need special attention.
5. Record Payments and Reconcile Accounts
After payment, the accounting records should reflect the reduction in accounts payable and the corresponding cash disbursement. The AP balance should also be reconciled regularly to supporting invoice records, with outstanding items investigated. Vendor statements can help identify missing invoices, unapplied credits, or payments that haven't been properly recorded.
At month-end, the accounting team should review unpaid invoices and other obligations that may need to be accrued, even when a vendor hasn't submitted an invoice yet. Our guide to month-end close explains how that review fits into the broader financial reporting process.
How Can Startups Manage Accounts Payable Without Hurting Cash Flow?
One of the most useful things an AP process can provide is a reliable schedule of upcoming payments.
A company might have $80,000 in outstanding invoices, but that figure alone doesn't tell leadership much about the immediate cash requirement. If $60,000 is due next week, the situation is very different from having most of those payments spread across the next two months.
An AP aging report organizes unpaid invoices by their due dates or how long they've been outstanding. Common categories include current, 1–30 days overdue, 31–60 days overdue, and older balances. Reviewing the report helps the finance team identify approaching deadlines, overdue obligations, and invoices that need attention.
Suppose a startup has $75,000 in unpaid vendor bills. Of that amount, $20,000 is due this week, $35,000 is due over the following month, and $20,000 isn't due for another 60 days. The total liability remains $75,000, but the payment schedule gives leadership a much more useful picture of when cash will be needed.
Aging reports should feed into short-term cash forecasts, alongside payroll, taxes, debt payments, and expected customer collections. Reviewing payment timing can help the company avoid unnecessary cash shortages while continuing to meet its obligations.
Payment terms are worth reviewing as well. Vendors may be willing to negotiate longer terms, especially as purchasing volumes increase or a relationship becomes established. Any changes should be agreed upon rather than assumed.
What Accounts Payable Controls Should Every Startup Have?
A company doesn't need a large finance department to establish reasonable payment controls, but it does need clear procedures that employees understand and follow. A good starting point is centralizing invoice collection. Vendors should know where to send their bills, and employees should have a consistent way to submit invoices they receive directly. This reduces the likelihood of invoices disappearing into individual inboxes or being entered more than once.
Approval authority is equally important. Establish who can authorize purchases and payments, along with spending limits that reflect the company's size and structure. Before releasing a payment, someone should verify the invoice against the original purchase agreement or authorization and check for potential duplicates. Changes to vendor banking information deserve particular attention. Any request to update payment instructions should be independently confirmed using a trusted contact method, rather than relying on the information provided in the request itself.
Recurring expenses also warrant regular review. Software subscriptions, service agreements, and other automatic payments can continue long after they're needed, particularly when the employee who originally authorized them has moved on. Reviewing those charges periodically can uncover unnecessary spending that might otherwise go unnoticed.
Finally, payment activity and outstanding balances should be reconciled regularly, with discrepancies investigated while the details are still relatively fresh. These controls become especially important as purchasing decisions spread across departments. Finance needs visibility into what the company has committed to spending, even when the invoice won't arrive until later.
What Are the Most Common Accounts Payable Mistakes?
Some AP problems are caused by weak processes. Others develop because procedures that worked when the company was smaller haven't kept pace with growth.
One common mistake is recording invoices only when they're paid. For companies using accrual accounting, that can cause expenses to appear in the wrong reporting period and leave liabilities off the balance sheet.
Another is allowing invoices to sit in individual inboxes. If a department head is traveling or leaves the company, the finance team may have no idea that a payment is outstanding. Duplicate payments are another concern, particularly when invoices arrive through multiple channels. A vendor may apply an extra payment as a credit, leaving the company unaware that it has paid twice.
Startups also sometimes pay invoices as soon as they arrive without considering the timing of other obligations. While prompt payment is generally appreciated, an unnecessary early disbursement can reduce the cash available for payroll, taxes, or other expenses coming due.
Most of these problems can be prevented with relatively straightforward procedures. The difficulty comes when a company waits until it has hundreds of invoices and months of inconsistent records before addressing them.
When Should a Startup Automate or Outsource Accounts Payable?
Automation can help when invoice volume makes manual processing difficult. AP tools may capture invoice information, route approvals, flag potential duplicates, and schedule payments. Integrations with accounting software can reduce repetitive data entry.
Someone still needs to review exceptions, verify unusual transactions, and ensure expenses are legitimate and recorded correctly. Automated systems can process information efficiently, but they depend on accurate inputs and appropriate controls.
Outsourcing may be worth considering when AP responsibilities are consuming significant internal time or when the company needs broader accounting support. Some providers handle invoice processing or payment administration, while others focus on the accounting work associated with vendor obligations, including recording liabilities, reconciling AP balances, and supporting month-end reporting.
The appropriate arrangement depends on what the provider actually manages. Payment authorization and banking access should remain subject to clearly defined client-approved controls.
How Graphite Financial Supports Accounts Payable
For growing startups, accounts payable is part of a larger accounting responsibility: keeping expenses and liabilities accurately recorded so financial statements reflect the company's position.
Graphite Financial provides outsourced accounting and bookkeeping services, including general ledger management, reconciliations, and month-end close. Depending on the agreed scope of services, our team helps maintain the accounting records associated with vendor obligations and supports accurate financial reporting.
If your company is struggling to keep its accounting records current as transaction volume increases, talk to Graphite Financial about the support your business needs.
Frequently Asked Questions About Accounts Payable
What is the difference between accounts payable and accounts receivable?
Accounts payable represents amounts a company owes suppliers and other creditors. Accounts receivable represents amounts customers owe the company. Both affect working capital, but AP concerns outgoing payments while AR concerns incoming collections.
Is accounts payable an expense or a liability?
Accounts payable is a liability recorded on the balance sheet. The underlying purchase may be recorded as an expense, inventory, an asset, or another appropriate category, depending on the transaction and applicable accounting policies.
What is an accounts payable aging report?
An AP aging report organizes outstanding vendor invoices by due date or how long they have been overdue. It helps businesses identify upcoming payments, monitor overdue invoices, and plan cash requirements.
How often should a startup review accounts payable?
The appropriate frequency depends on invoice volume and payment activity. Many startups benefit from reviewing upcoming payments weekly and reconciling AP balances monthly, with more frequent oversight when transaction volumes are high.
Can accounts payable be automated completely?
Software can automate invoice capture, approval routing, duplicate detection, and payment scheduling. However, businesses still need human oversight for exceptions, purchasing authorization, vendor verification, and accounting accuracy.