The Cash Flow Crisis No One Warns You About

David ran a general contracting business in Virginia. His schedule was full. His revenue was up. His profit margin was healthy. He was going broke.

On paper, he netted $12,000 in January. In his bank account, he had $800.

Where did the money go? Everywhere.

He had invoiced $42,000 in December but collected only $18,000. The rest was in 30-day payment terms. He had paid $14,000 in supplier invoices (net-15 terms) and $8,000 in payroll. He had prepaid $6,000 in insurance for the quarter. His equipment loan took $1,200. Taxes took $2,500.

He was profitable on an income statement. He was broke in real life.

This is the cash flow trap, and it destroys more contractors than bad work ever could. Revenue is not cash. Profit is not cash. Cash is cash. And if you do not manage it, you will run out.

The Core Problem: You Pay Before You Get Paid

Suppliers want payment in 15-30 days. Employees want payment every two weeks. The IRS wants quarterly estimated taxes. Your insurance company wants annual or quarterly premiums.

Your customers want 30-day payment terms. Or 45. Or "I'll pay you when I get my tax refund."

You are fronting all the money. Materials, labor, overhead. Then you wait to collect.

A kitchen remodel costs you $18,000 to complete (materials, labor, overhead). You finish the job on March 15. You invoice $28,000. The client pays 30 days later, on April 15.

For 30 days, you are out $18,000. If you are running three projects simultaneously, you are out $50,000+ at any given time.

If your bank balance cannot cover that gap, you miss payroll, or you cannot buy materials for the next job, or you default on a loan payment.

This is why profitable contractors go bankrupt. The math works. The timing does not.

Rule 1: Get Deposits Up Front

Never start work without collecting a deposit.

For small jobs (under $2,000), collect 50% up front.

For large jobs (over $10,000), collect 30-50% to start, 30-40% at midpoint, and the balance on completion.

A $30,000 kitchen remodel with a 40% deposit gives you $12,000 in cash before you spend a dollar. That $12,000 covers most of your material cost. You are no longer fronting the entire job.

Some contractors resist deposits because they fear losing the sale. Here is the truth: a client who will not put down a deposit is a client who will not pay the final invoice. Deposits filter out the problem customers before they become your problem.

One remodeler in Tennessee lost $22,000 on a client who refused to pay the final invoice after the job was complete. He had no deposit, so he had no leverage. He sued. It cost him $6,000 in legal fees and 18 months. He won the judgment. The client never paid it.

Now he requires 40% deposits on every job over $5,000. He has never been stiffed again.

Rule 2: Invoice Immediately, Follow Up Relentlessly

Do not wait until the end of the month to send invoices. Send them the day the job is complete.

Then follow up. Day 15: "Just checking in, wanted to make sure you received the invoice." Day 25: "Invoice is due in five days, let me know if you need anything." Day 31: "Invoice is past due. Please remit payment this week."

Most contractors are too polite. They send an invoice and hope the client pays. They do not want to be pushy.

Being polite does not pay your bills. Being professional and persistent does.

One plumber cut his average collection time from 42 days to 18 days just by following up consistently. That single change freed up $30,000 in working capital. He stopped needing his line of credit.

Rule 3: Offer a Discount for Early Payment

If you normally offer net-30 terms, offer a 2% discount for payment within 10 days.

A $10,000 invoice with a 2% discount costs you $200. But getting paid in 10 days instead of 30 days is worth way more than $200 in avoided interest and cash flow stress.

This is called 2/10 net 30. It is standard in many industries. Contractors under-use it.

Rule 4: Cut Slow Payers Loose

Some clients always pay late. Every invoice is a battle.

Stop working for them.

It does not matter if they are repeat customers. If they consistently pay 60-90 days out, they are costing you money in float, follow-up time, and stress.

One electrician had a commercial client who paid reliably, but always 75 days late. Every invoice was a $12,000 float for two and a half months. He calculated the cost: he was effectively loaning them $12,000 interest-free, which cost him $150/month in line of credit interest he had to pay to cover the gap.

He told them: "I need to move to net-15 terms, or I cannot continue working with you." They agreed. If they had not, he would have walked away.

Your cash flow is more important than any single customer.

Rule 5: Build a Cash Reserve

Every business has lumpy revenue. You have a great month, then a slow month. A big project pays out, then you have three weeks of small jobs.

A cash reserve smooths out the lumps.

Aim for three months of operating expenses in a savings account. If your monthly burn rate (payroll, rent, insurance, loan payments, etc.) is $15,000, you need $45,000 in reserve.

That sounds like a lot. Build it slowly. Every time you have a profitable month, set aside 20% into a separate savings account. Do not touch it unless revenue dips.

One HVAC contractor built a $60,000 reserve over three years. When COVID hit and revenue dropped 40% for two months, he did not miss payroll, did not default on his equipment loan, and did not panic. He rode it out.

By August, revenue was back. He still had $40,000 in reserve.

A cash reserve is not just financial. It is psychological. It lets you make decisions from a position of strength, not desperation.

Rule 6: Use a Line of Credit, But Sparingly

A line of credit is a safety net for cash flow gaps.

If you have $20,000 in receivables due next week but payroll is due today, a line of credit bridges the gap. You draw $8,000, make payroll, and repay it when the receivables come in.

This is what lines of credit are for. Short-term cash flow mismatches.

What they are not for: funding unprofitable work, covering operating losses, or buying equipment you cannot afford.

Interest on a line of credit is 8-12%. If you are carrying a balance for months, you are paying thousands in interest. That is a symptom of a deeper problem (you are undercapitalized, underpricing, or overextended).

Use a line of credit as a bridge, not a crutch.

Rule 7: Separate Owner Pay from Business Cash

Many contractors treat the business bank account like a personal ATM. Revenue comes in, they pull out what they need, and they hope enough is left for expenses.

This is how you run out of cash without realizing it.

Pay yourself a consistent salary. Twice a month, same amount, like clockwork. Everything else stays in the business account for expenses.

If the business is profitable, you can take an additional owner distribution once a quarter. But your baseline pay should be predictable and separate from cash flow fluctuations.

This does two things: it forces you to know your real burn rate, and it prevents you from accidentally spending money the business needs.

The 13-Week Cash Flow Forecast That Saves You

Most contractors do not know if they will have cash next month until next month arrives. By then it is too late to fix it.

A 13-week cash flow forecast gives you visibility.

Every week, update a simple spreadsheet:

Week 1: Starting cash, expected revenue, expected expenses, ending cash
Week 2: Starting cash (= Week 1 ending cash), expected revenue, expected expenses, ending cash
Repeat for 13 weeks

If Week 8 shows you going negative, you know now. You can delay a purchase, accelerate an invoice, or draw on your line of credit. You are not surprised.

One contractor in Oregon started forecasting cash flow weekly. He caught a potential shortfall six weeks out, delayed a $12,000 equipment purchase by a month, and avoided overdrafting his account.

It takes 15 minutes a week. It is the single best financial habit you can build.

Related reading: