Break-Even Analysis
Calculate how many miles you need to drive each month to cover all fixed and variable costs and start earning profit.
Results
Visualization
How It Works
Break-even is the truck's gravity — the number of miles a month before you start earning anything. Below it, the operation bleeds. Above it, every mile pays driver wages and reserves. ATRI 2025 puts owner-operator monthly fixed costs at $4,800-$6,500 typical (truck payment, insurance, permits, ELD, parking) and variable CPM at $0.62-$0.85 (fuel, tires, maintenance). At $2.10 average all-in RPM, that puts break-even between 3,800 and 5,200 miles a month. Solo drivers averaging 9,500 miles clear break-even by week 3 — but only if rates hold. Drop RPM by $0.20 and break-even slides to 5,500-7,000 miles fast.
The Formula
Worked Example
Owner-op with paid-off Freightliner Cascadia: monthly fixed = $2,400 (insurance $1,150, permits $200, ELD $35, parking $250, phone $150, accountant $115, misc $500). Variable CPM = $0.78 (fuel $0.62 at $4.30/6.9 MPG, maintenance $0.14, tires $0.02). Average all-in RPM = $1.95 dry van. Contribution margin = $1.95 - $0.78 = $1.17/mi. Break-even = $2,400 / $1.17 = 2,051 miles. Same operator with a $2,200 truck payment: fixed jumps to $4,600, break-even climbs to 3,932 miles. Adding a $700 trailer payment: $5,300 fixed, 4,530 miles to break-even. Each fixed-cost addition pushes the break-even line up by roughly 600-1,000 miles per $700/month.
Practical Tips
- Memorize your break-even number. When a broker offers a load that drops your weekly RPM below the threshold, you should hear an alarm — not run the math from scratch.
- Refinance the truck note when rates allow. A 1.5% rate reduction on a $90,000 truck note saves ~$80/month, dropping break-even by ~70 miles. Insurance shopping every renewal saves another $50-$200/month for most operators.
- Improving real-world MPG from 6.5 to 6.9 at $4.30 diesel saves $0.04/mi — across 9,500 monthly miles that's $380. Same impact as cutting $380 from fixed costs but compounds across every load.
- Build a 6-week cash reserve at 1.5x monthly fixed costs minimum. ATRI 2025 found 38% of new owner-operators failing in year 2 cited an unrecoverable repair event of $4,500-$12,000 — exactly the size a typical reserve would cover.
- Track break-even monthly. Insurance renewals, fuel price swings, and tire replacement cycles all shift the number. A break-even calculated in January is wrong by April unless updated.
- Aim to clear break-even by day 18 of the month. If you're still chasing fixed costs at day 22, the operation has either taken on too much fixed cost, accepted bad rates, or both.
Frequently Asked Questions
Why does my real break-even differ from the textbook number?
Most owner-operators forget items: quarterly IFTA payments ($300-$800), annual heavy use tax ($550 for 80,000+ GVW), tire replacement cycles every 80,000-120,000 miles ($2,200-$3,500 for steers, $4,500-$7,000 drives), and pre-pass/EZ Pass annuals. Add these to monthly fixed by spreading across 12 months.
What's a contribution margin and why does it matter?
Contribution margin is what each mile contributes toward covering fixed costs after variable costs are paid. It equals RPM minus variable CPM. At $1.95 RPM and $0.78 variable CPM, margin = $1.17/mi. A higher margin means fewer miles to break even. Going from $1.95 to $2.20 RPM at the same variable CPM cuts break-even by ~25%.
How many miles should I drive monthly to be profitable?
Solo owner-operators averaged 9,500 monthly miles in 2025 ATRI data. Your break-even tells you the floor. Profitable operators run 1.5-2.0x break-even — for a 4,074-mile break-even, that's 6,100-8,150 monthly miles. ATRI reports 11,000+ miles correlates with the top quartile of net profit but burns equipment 35% faster.
What happens if my variable CPM exceeds my RPM?
Negative contribution margin — every mile driven loses money. The truck stops moving until something changes: rates rise, fuel falls, or you find a different lane. Some operators in late 2024 with locked-in dedicated contracts at $1.65/mi against $1.92/mi variable CPM ran 6 months underwater before exiting. Don't repeat that mistake.
How does home time affect break-even economics?
Fixed costs accrue 24/7. Take a 7-day home week instead of 4 days and you skip ~3,150 miles (450/day average). At $1.17 contribution margin that's $3,685 in foregone profit. The truck still owes its $2,400-$5,500 in fixed costs that month. Plan home time around break-even — clear the threshold first, then take time.
Should I include driver wages in fixed costs?
Owner-operators typically don't pay themselves a fixed wage — earnings = profit after costs. But for accurate break-even comparison vs company drivers, add a $4,500-$7,000/month 'owner draw' to fixed costs. This shows whether the operation supports a working wage or merely covers truck costs.
How quickly can I lower my break-even?
Insurance shopping at renewal: $50-$200/mo savings within 30 days. Refinance note: $40-$150/mo within 60-90 days. Drop unused permits or downgrade ELD plans: $30-$60/mo immediately. Tire pressure discipline and idle reduction: $0.04-$0.06/mi variable savings ongoing. Stack 3 of these and break-even drops by 400-700 miles within a quarter.
Why do new-truck owner-operators have higher break-even?
A new $185,000 sleeper at 6% APR over 60 months runs $3,580/month. That single line pushes break-even up by ~3,000 miles versus a paid-off truck. New operators also pay 25-40% more on insurance until they have 2-3 years CDL clean. Total monthly fixed for new-truck ownership runs $7,000-$9,200 vs $2,200-$3,500 paid-off.