A highly profitable consulting firm can absolutely experience a cash crisis if it is effectively financing its clients. If clients routinely pay in 90 days on net-60 terms, you're acting as their bank.
The goal is to improve cash conversion, not just collections. Some of these strategies can begin improving cash flow within days.
1. Segment your A/R immediately
Don't treat every invoice the same.
Categorize receivables into:
- Current (not yet due)
- 1–15 days overdue
- 16–30 days
- 31–60 days
- 60+ days
- Strategic clients
- Chronic late payers
Then assign different collection strategies to each.
A client who is 5 days late shouldn't receive the same treatment as one that's 75 days overdue.
2. Contact clients before invoices become overdue
Many firms wait until invoices are late.
Instead:
- 10 days before due date: "Just confirming the invoice is approved and scheduled for payment."
- 3 days before due date: "Checking whether you need anything from us before payment."
This catches issues like:
- wrong PO number
- invoice sent to wrong person
- missing documentation
- invoice stuck in approval
Often the invoice isn't being intentionally delayed—it simply isn't moving through the customer's process.
3. Find the real decision maker
Many consulting firms only know the project sponsor.
Collections usually involve:
- Accounts Payable
- Procurement
- Finance
- Shared Services
Build relationships with these people.
Know:
- who approves invoices
- who enters invoices
- who schedules payment runs
Sometimes your client champion assumes finance has already paid.
4. Make collections someone's daily job
Don't make collections something accounting does "when there's time."
Every weekday:
- review aging
- make calls
- send reminders
- update expected payment dates
Even one hour per day makes a significant difference.
5. Replace vague promises with specific commitments
Instead of:
"When do you think payment might happen?"
Ask:
"Can you confirm the payment date?"
Then follow up.
Example:
"Thanks for confirming payment on July 18. We'll check in if we don't see it by then."
Specific commitments are much more effective than general assurances.
6. Escalate professionally
When invoices reach 30–45 days overdue:
Move beyond your project contact.
Example:
- project manager
- director
- finance manager
- CFO (if appropriate)
Keep the tone factual.
"Our records indicate Invoice 4178 remains unpaid 38 days past due. Can you help us determine what is preventing payment?"
7. Invoice faster
Many consulting firms lose weeks before the invoice is even issued.
Ask:
- Can invoices go out the same day work is approved?
- Weekly instead of monthly?
- At each milestone instead of project completion?
- Immediately after time approval?
Every week you delay invoicing adds a week to DSO.
8. Bill more frequently
Instead of:
consider
- weekly
- biweekly
- milestone billing
- sprint billing
A client paying every two weeks creates much smoother cash flow than one large invoice every month.
9. Increase upfront payments
For new projects:
Instead of:
20% upfront
consider:
- 40%
- 50%
- first month prepaid
- first milestone prepaid
For custom consulting, this is often entirely reasonable.
10. Switch from payment-after-delivery to milestone billing
Instead of:
Project complete → Invoice
Use:
- Discovery completed
- Design completed
- Implementation completed
- Training completed
Cash comes in throughout the engagement.
11. Require retainers
Many successful consulting firms operate on monthly retainers.
Example:
Client prepays:
$25,000
Hours are consumed against that balance.
When balance drops below a threshold:
Invoice to replenish.
This effectively shifts financing from your business to the client.
12. Offer early payment incentives
Sometimes giving up a small amount is worthwhile.
Examples:
- 2% discount if paid within 10 days
- 1% discount within 15 days
You should compare the cost of the discount with the cost of borrowing or the operational stress caused by delayed cash.
13. Charge late fees—carefully
If your contracts allow it:
- interest
- late fees
- collection costs
Many firms don't actually collect these charges, but simply mentioning that they may apply can encourage timely payment.
14. Make payment ridiculously easy
Accept:
- ACH
- wire
- credit card (if appropriate)
- digital payment links
If clients have to mail checks, you're adding avoidable delays.
15. Stop allowing exceptions
Many firms unintentionally train clients to pay late.
If one client always pays in 90 days:
Eventually everyone notices.
Consistency matters.
16. Review contract language for future deals
Instead of:
Net 60
Try:
- Net 30
- Net 15
- Due upon receipt
- Payment at milestone acceptance
Large enterprise customers may insist on longer terms, but smaller clients are often open to negotiation if you ask early.
17. Put clients on credit limits
If someone owes:
Don't continue adding another:
Pause new work until outstanding balances fall below an agreed threshold, unless there is a strategic reason to continue.
18. Pause work for chronic offenders
This is uncomfortable but often effective.
Communicate in advance:
"Our agreement requires accounts to remain current. We'll need to pause additional work until outstanding invoices are resolved."
Many payments appear remarkably quickly once delivery is at risk.
19. Forecast collections weekly
Instead of asking:
"What is A/R?"
Forecast:
- Expected cash this week
- Next week
- Following week
Assign confidence levels:
This gives you a much clearer view of likely payroll coverage than simply looking at the total A/R balance.
20. Use financing strategically
If you have a fundamentally healthy business but customers dictate long payment cycles, consider tools such as:
- An accounts receivable line of credit secured by invoices.
- Invoice factoring or selective invoice financing for specific large receivables.
- A revolving business line of credit to bridge timing gaps.
These don't fix collection discipline, but they can smooth payroll while you implement operational improvements.
A practical 30-day action plan
If I were brought in to reduce DSO quickly, I'd prioritize these actions:
- Call every customer with invoices over 30 days overdue and obtain a specific payment date.
- Send proactive reminders on all invoices due within the next 10 days to confirm there are no processing issues.
- Invoice work within 24 hours of milestone completion or time approval, and move from monthly to milestone or biweekly billing where possible.
- Require deposits or retainers for all new engagements and negotiate shorter payment terms when renewing contracts.
- Establish a policy to pause new work for clients who exceed agreed credit limits or become significantly delinquent, with exceptions approved by senior leadership.
- Build a 13-week cash forecast based on expected collections, and review it every week.
Reducing DSO by even 15–20 days can materially improve liquidity. For example, if your firm bills $1 million per month, collecting cash 20 days sooner can free roughly $650,000–$700,000 of working capital (about $1 million × 20/30), often enough to eliminate recurring payroll pressure without increasing revenue.
