Owner-Operator Cash Flow: The 6-Week Rule That Keeps You Alive
The Short Answer
Keep 6 weeks of fixed costs in cash — roughly $18K–$25K for a one-truck operation. That covers a broker slow-paying 60 days, a $6K transmission surprise, and 2 weeks of downtime. Without it, one bad broker or one repair takes you out.
You will make more from cash-flow discipline than from any single rate negotiation. Here is the survival math.
6 weeks of fixed costs — $18,000–$25,000 for a solo operator. That's enough to survive one bad broker payment cycle plus one major repair. Anything less and you're one incident from parking the truck.
The 6-Week Reserve Math
| Fixed cost | 6 weeks |
|---|---|
| Truck payment ($1,500/mo) | $2,250 |
| Insurance ($1,000/mo) | $1,500 |
| Living expenses ($4,000/mo) | $6,000 |
| Repairs float | $5,000 |
| Fuel float (2 weeks) | $3,000 |
| Total reserve target | $17,750 |
The Cash Flow Timing Problem
You deliver a load Monday. Broker gets your invoice Tuesday. Standard net-30 terms: money hits your account 30 days later. Meanwhile, your fuel bill is due weekly and your truck payment is due monthly. Without factoring or reserves, you can't operate.
The 'first broker slow-pay' rite of passage
Every owner-operator has this happen: a broker who was 'good' takes 60 days on a $4,500 invoice. If it's 20% of your monthly revenue and you have no reserves, you're borrowing to make truck payment. The 6-week rule prevents this.
How to Build Reserves While Running
- Pay yourself last for the first 90 days
- Sweep 15% of every payment into a separate savings account
- Skip factoring on high-credit brokers to save the fee
- Delay 'nice to have' upgrades until reserve is full
- Automate the sweep — don't rely on discipline
Weekly Cash Flow Ritual
- Monday: reconcile last week's revenue vs plan
- Tuesday: age receivables — call any invoice over 35 days
- Wednesday: check fuel spend vs budget
- Friday: pay bills, sweep reserves
When Reserves Get Low: The Emergency Playbook
- Switch temporarily to 100% quick-pay brokers
- Take Amazon Relay loads for guaranteed 7-day pay
- Delay non-essential maintenance by 2 weeks max
- Pull owner draw down to $0 until reserves hit 3 weeks
Frequently Asked Questions
How much cash do I need to start owner-operator?+
$8,000–$15,000 minimum — that covers filings, insurance down payment, first month's fuel, and small reserves. The 6-week reserve builds during month 2–4.
What if a broker doesn't pay?+
With non-recourse factoring, the factor eats it. Without factoring, you file a claim on your credit-check service (DAT RTS) and possibly small claims. Prevention (credit-check every broker) beats collection every time.
Is factoring better than reserves?+
Factoring is a substitute for reserves in year 1. Long term, reserves are cheaper. Best case: build reserves and drop factoring by year 2.