What is accounts payable (AP)?

Accounts Payable (AP) represents money your business owes to vendors, suppliers, and service providers for goods or services received but not yet paid. For professional service firms, AP typically includes software subscriptions, contractor payments, office expenses, and professional services. AP appears as a current liability on your balance sheet because you're obligated to pay these amounts, usually within 30-90 days.

Key characteristics of accounts payable (AP)

• Current liability on the balance sheet

• Typically due within 30-90 days (Net 30, Net 60, Net 90 terms)

• Tracked by vendor, invoice number, and due date

• Directly impacts cash flow timing and vendor relationships

• Can be automated through AP software (Bill.com, Ramp, Divvy)

Why accounts payable (AP) matters for service firms.

Effective AP management prevents late payment fees, maintains vendor relationships, and optimizes cash flow. A consulting firm with $50,000 in monthly AP must balance paying early (losing cash flexibility) versus paying on time (preserving working capital). Taking full advantage of payment terms means a firm with $600,000 annual AP on Net 30 terms keeps an average $50,000 in working capital longer. Poor AP management costs firms 2-3% annually in late fees, rush charges, and damaged vendor relationships.

Example: Monthly AP cycle for 25-person consulting firm

• Software/tools: $8,500 (Asana, Slack, Microsoft, Adobe)

• Contractor payments: $15,000 (specialists, freelancers)

• Office/operations: $4,200 (rent, utilities, supplies)

• Professional services: $3,800 (legal, insurance, accounting)

• Total monthly AP: $31,500

• Average payment cycle: 35 days

• Working capital impact: Holding $36,500 in AP at any time

Related terms

• Accounts Receivable

• Cash Flow

• Working Capital

• Days Payable Outstanding

• Vendor Management