Budgeting a Road Trip: Fuel and Beyond
Fuel is the easy part of trip budgeting. Here is the full worksheet.
Budget a road trip as fuel (distance / MPG x gas price) plus tolls, food, lodging, and a 10 percent contingency. Split shared costs per person after subtracting the driver's wear-and-tear share if you want to be precise about it.
The fuel leg
Map distance divided by your real MPG (not the sticker) times the gas price along the route, not at home. Gas can vary $1 a gallon between states. For a 1,200-mile round trip at 28 MPG and $3.30 average, fuel is about $141.
The rest of the budget
Tolls: check the route on a toll calculator; some corridors add $30 to $60 each way. Food: $40 to $60 per person per day is a realistic middle. Lodging: the swing factor, from $0 (couch) to $200-plus a night. Add 10 percent contingency for the tire, the detour, the unplanned amazing diner.
Splitting fairly
Simplest fair split: total shared costs (fuel, tolls, lodging) divided by riders, with the car owner getting a per-mile wear credit (the IRS rate, about 70 cents a mile in 2026, is the standard reference) or just splitting evenly and calling it friendship. Settle the method before departure, not at the last gas station.
Saving on the drive
One car instead of two halves the fuel. Steady 65 to 70 mph beats 80 by a wide margin. Gas station apps find the cheapest fuel near the route. And packing a cooler cuts the food bill more than any fuel trick.
Skip the arithmetic
Price the fuel leg of your trip first.
Trip cost questions
How do I estimate road trip fuel cost?
Divide total map miles by your real-world MPG, multiply by the average gas price along the route. Use route prices, not home prices.
How much should I budget per day for a road trip?
A realistic middle is $150 to $250 per person per day including fuel share, food, and mid-range lodging. Camping or staying with friends cuts this sharply.
Is driving cheaper than flying?
For short trips with multiple riders, driving usually wins. For long solo trips, compare the full driving cost (fuel, wear, hotel, your time) against the fare.
How do you split gas money fairly?
Add up fuel and tolls, divide by the number of riders, and settle with a payment app. Agree on the method before you leave.