Managing Agency Cash Flow When Clients Pay Net 30
Net 30 is standard in business. You invoice on day one.
Client pays on day 30. Thirty days of gap.
Meanwhile, you paid your team on day one. You paid software on day one. You need to stay solvent for 30 days without client money.
For a 10-person agency, that gap is $30-50K in floating liability. Most agencies don't manage this.
Here's how to stay solvent on Net 30 terms.
The Cash Flow Math
$100K monthly revenue on Net 30 terms means:
- Day 1: You invoice
- Day 1: You owe $80K in payroll (team costs)
- Day 1: You owe $10K in operating expenses
- Day 1: You have $0 cash from this invoice
- Day 30: You receive $100K
- Day 30: Your cash flow positive-ness kicks in
For 30 days, you have a $90K gap.
If you have $120K in cash reserves, you're fine. If you have $20K, you're in crisis.
The Four Solutions
Solution 1: Require 50% upfront
Simplest fix. "Our standard terms are 50% due to start, 50% on delivery."
This cuts your gap in half. You get $50K on day one, reducing your floating liability to $40K.
Pushback: "We always pay Net 30."
Response: "That's fine. We require 50% upfront to manage cash flow. Our pricing already reflects Net 30 standard."
Most clients accept. Some leave. Those are usually problem clients anyway.
Solution 2: Build a cash reserve
Save 3 months of operating expenses.
If monthly costs are $30K, target $90K saved.
This cash sits in your business account and covers the gap. When invoices are paid, cash comes back into the reserve.
This is the most stable solution but requires discipline.
How To Build A Cash Reserve
Month 1-2: Normal operations. Target saving $5K.
Month 3-6: As revenue grows, save $10K/month.
Month 6-12: Save $15-20K/month.
After 12 months of discipline, you have $120-150K reserved. This covers 4-5 months of operations and eliminates cash flow stress.
Using Invoicing Terms To Improve Cash Flow
You have multiple levers:
Lever 1: Require deposits
50% upfront before starting work. This is standard. Use it.
Lever 2: Invoice in phases
Instead of one $30K invoice at the end, do three $10K invoices:
- $10K on kickoff
- $10K at 50% delivery
- $10K on completion
This distributes cash inflow and reduces gap.
Lever 3: Invoice before delivery
Invoice on the date of delivery, not after. "Website launch is Friday. I'm invoicing Thursday."
This gets you money same day vs. day 31.
Lever 4: Use Net 15 instead of Net 30
Propose Net 15. "Our standard terms are Net 15. If you need Net 30, we can add 2% fee for extended terms."
This cuts your gap in half.
The Accounting Solution
Track accounts receivable aging weekly:
| Invoice Date | Days Outstanding | Amount | Status |
|---|---|---|---|
| Jan 3 | 7 days | $10K | Current |
| Jan 10 | 14 days | $10K | Current |
| Jan 17 | 21 days | $10K | Due in 9 days |
| Jan 24 | 27 days | $8K | Due in 3 days |
This tells you what's coming in.
If you're owed $60K and only $10K is due this week, you have a cash problem next week.
Act early. Call clients with aging receivables. "We have an outstanding invoice from Jan 3 that's due. Can I expect payment this week?"
Most clients respond and pay. Some reveal problems (cash flow issues, billing disputes).
The Payroll Solution
If Net 30 is killing you, change your payroll timing:
Option 1: Bi-weekly payroll instead of monthly
- Spreads cash outflow
- Gives you more flexibility
Option 2: Reduce cash outflow in slow months
- If you know Q1 is slow, move project work into Q4 (prepayment)
- Use Q4 revenue to cover Q1 payroll
When Not To Take Net 30 Clients
If you have less than 2 months of operating expenses saved, you should not take clients on Net 30 terms.
Either:
- Require 50% upfront
- Require Net 15
- Or wait until you have cash reserves
Going broke on technicality (owed money but can't pay payroll) is worse than missing a client.
The Retainer Advantage
Monthly retainers eliminate this problem.
Retainer invoiced on day 1 of month. Paid by day 15 usually. You receive payment mid-month, covering payroll due end of month.
Retainers create better cash flow than projects.
If 60% of revenue is retainers, you have steady cash flow. Projects are bonus.
FAQ
What's a reasonable amount of cash to hold?
Minimum: 2 months of operating costs Comfortable: 3 months Excellent: 4-6 months
If you have less than 2 months, you're one bad month away from crisis.
Should I charge late fees on overdue invoices?
Yes. 1.5% per month on outstanding receivables is standard. Invoice should state this clearly.
Most clients pay before late fees. Some need the reminder.
How do I convince clients to pay faster?
Offer incentives: "If you pay within 10 days, we offer a 2% discount."
This costs you 2% but improves cash flow by weeks. Often worth it.
What if a client refuses to pay on time?
This is a red flag. Stop work until payment is current. Tell them: "We'll resume work once your account is current."
Being owed $50K to a problem client is not okay. Pause engagement until resolved.
Should I use a payment processor to improve cash flow?
You can accept credit cards and take immediate payment, but you'll pay 2-3% fees. The math usually doesn't work unless you're desperate for cash.