Split carpool costs fairly between families
Load your trip log, and Pooltally prices every trip by the miles, splits it by the children riding and tells you who owes whom in the fewest payments — exact to the cent, in your browser; nothing is uploaded.
How it works
- Log the trips — date, driver, riders and miles — in the template, or try the sample.
- Pick the rate and the split the group agreed on.
- Share the settle-up: who pays whom, or how many drives each family owes.
Why Pooltally
For parents running a school run, practice carpool or any shared ride: families drive different amounts and send different numbers of kids. Pooltally turns the trip log into each family's fair share and the fewest payments to settle.
Your trip log
One row per trip: date, driver, riders (Garcia:2; Lee) and miles, plus tolls. Excel or CSV, or start from the template.
Fair rate per mile
The IRS business rate for each trip's date (72.5¢, then 76¢ from July 1, 2026), your own rate, or gas price ÷ mpg.
Split to the cent
Per child or per family riding. Every trip is split in whole cents and balances always net to exactly $0.
Fewest payments
Who pays whom, in as few transfers as possible — or the number of drives each family owes instead.
Data flags
Duplicate trips, a driver whose kids didn't ride, families who never drove, misspelled names and trips with no date.
Rate and split what-ifs
See the balances at the IRS rate, 50¢, 30¢ or gas money, per child and per family, before the group agrees.
Simple pricing
Free for every balance, the settle-up and every flag. Pro for every trip, every what-if, the family statements and the exports.
Free
- Any number of trips
- Every balance and the settle-up payments
- 3 what-ifs and 12 trips shown, print with a footer
- No signup, nothing uploaded
7-day pass
- 7 days of Pro, no subscription
- Every trip on screen and in print
- Every rate and split what-if
- Family statements, Excel workbook and CSVs
Pro Yearly Best value
- Everything in Pro
- A whole school year
- Costs less than 6 months of monthly
Prices in USD. Secure checkout by Polar, our merchant of record (its checkout shows our seller name, Launchtools). Sales tax is added at checkout in the US, Canada and India; elsewhere VAT/GST is included. Already bought? Enter your license key.
FAQ
Is my data uploaded?
No. Your files are read by JavaScript in your browser tab and never sent to us or anyone else. Trips aren't stored, so closing the tab clears them. The rate and split options can be saved in this browser if you ask; the carpool name never is.
What rate per mile should a carpool use?
Whatever the group agrees. Many use the IRS business standard mileage rate because it is public and covers the whole cost of a car: 72.5 cents a mile from January 1, 2026 and 76 cents from July 1, 2026 (70 cents in 2025). Gas money alone is gas price ÷ mpg, often 10–15 cents a mile.
Per child or per family?
Per child charges each family for the seats its children use, so a family with two kids riding pays twice the share of a family with one. Per family splits each trip equally between the households riding. Pooltally shows both.
How does the settle-up work?
Each family's balance is what the trips it drove are worth minus its share of every trip. The largest debtor pays the largest creditor, then the next, until everyone is even — at most one payment fewer than the number of families.
How are the cents handled?
Each trip's cost is rounded to the cent, then split among the riders by rounding every share down and giving the leftover cents to the largest remainders, so the shares always add up exactly to the trip.
Can I deduct carpool miles?
Generally no — driving your own and other people's children to school isn't business travel. Pooltally uses the IRS rate only as a fair price per mile. It is not tax advice.
What's free?
Every family's balance, the settle-up payments, the turns owed, every flag, 3 what-ifs and 12 trips on screen and in print (with a footer). Pro shows every trip and every what-if and adds a statement for every family, the Excel workbook and CSV exports.
Is this tax, legal or insurance advice?
No. Pooltally does the arithmetic on the trips you enter. Keep payments to the shared cost of driving; if you're unsure how your auto policy treats carpools, ask your insurer.