Carpool gas money: how much should riders pay?
No install, no sign-up. 100% free.
For example, a 4-person carpool to work (1 month)
1 driver and 3 riders. Gas, tolls and parking were paid separately.
Split 4 ways? Should the driver pay the same? Who pays whom?
With FAMI-KAN, just set the ratios
Who pays whom
WHY FAMI-KAN
No sign-up, no limits, no black box
accounts or installs
Just paste a link in your group chat.
entries and members
No daily caps, no paid plan.
currencies, 8 languages
Works for trips abroad and mixed-language groups.
Shared pot (deposits) supported
Collect money up front; refunds and top-ups are settled automatically. Rare among no-sign-up apps.
Everyone can answer "why this amount?"
Who carries which ratio, what the base amount is. The whole calculation is always visible.
ABOUT THIS APP
What FAMI-KAN is
From everyday bills to trips, decide fairly who pays how much.
Adults 1.0, kids 0.5.
Split per person or per household, and set any ratio. Everyone's share is calculated automatically.
Just share a link.
No app to install, no account to create. Everyone adds what they paid from their own phone.
Who pays whom, how much. Instantly.
The fewest transfers to settle up, and every calculation visible to everyone. No black box.
HOW IT WORKS
How it works, in 4 steps
1Add households and set ratios
Adults 1.0, kids 0.5. Each household's total ratio is computed for you.
2Everyone enters what they paid
One family paid the rental car, another the hotel. Each from their own phone.
3Here's the result
Who pays whom, how much, in the fewest transfers.
4Send it and you're done
Share the result as one image, or copy the text for payment apps.
MoreHistory by date
Who paid for what, grouped by day. You can re-sort it too.
MoreBy Member
Each family's share, what they paid, and what they get back or owe.
MoreBy Item
What the money went on, by date or by category.
MoreSettlement card
One image to post in the group chat. The QR code opens the full details.
Any of these sound familiar?
The driver pays all the gas
Should the driver pay the same?
Settle daily rides at month end
→ Settle carpool costs once a month.
Log gas, tolls and parking. FAMI-KAN calculates each rider's share and who owes whom, with a smaller share for the driver if you like. Settle once a month. No sign up, completely free.
Don't let tedious money calculations ruin a great memory.
The driver pays for gas and tolls every day. How much should each rider pay?
Enter the month's costs and FAMI-KAN shows each rider's amount and who owes whom, all at once. No more handing over change every day.
Should the person who provides the car pay as much as the riders?
Set ratios such as riders 1.0 and driver 0.5 to account for the car.
What about days someone didn't ride?
Limit that day's expenses to the people who rode. Someone joining mid-month pays only their share.
FAMI-KAN needs no sign-up and no install. Set a ratio once — Adult 1.0, Child 0.5 — and it applies to every expense after that. We compare it with other apps, including where they do better.
Why FAMI-KAN is Best
How much carpool riders pay comes down to two choices: which costs go in (gas, tolls, parking, and perhaps something for wear on the car) and whether the driver takes a smaller share for providing the car. A ratio such as riders 1.0 and driver 0.5 is one simple way to do the second. Say a month of commuting costs $240 in gas, $60 in tolls and $50 in parking, $350 in all, shared by a driver and three riders. With the driver at 0.5, the total ratio is 3.5, so each rider pays $100 and the driver $50. The driver has paid all $350, so each rider sends the driver $100 at the end of the month. Carpools get awkward when change is handed over every day and nobody keeps track of the days someone didn't ride. In FAMI-KAN, the driver logs each fill-up, toll and parking fee as it happens, and anyone who wasn't in the car that day is unticked. At month end, the settlement shows each rider's amount, and the next month can start from a duplicate of this one.
Simple 3-Step Guide
No app downloads or accounts needed.
- 1
Create the carpool
Start an event for the month and add the driver and riders.
- 2
Set the ratios
Give riders 1.0 and the driver a smaller ratio, such as 0.5, if you agree they should pay less.
- 3
Log costs as they happen
The driver enters gas, tolls and parking. Untick anyone who didn't ride that day.
- 4
Settle monthly
Check the Settle tab, send the transfers, record them under "Settled payments" and duplicate the event for next month.
Why we built FAMI-KAN
FAMI-KAN isn't just a calculator. It's a partner that handles the math so you can focus on what matters: "That dinner was amazing", "Where should we go next?" — preserving the afterglow of time well spent together.
Read more
The worst part of any trip comes at the very end — when everyone's tired and someone has to sort out the money. Lining up receipts, punching numbers into a calculator, trying to remember who paid what... it brings a cold, transactional feeling to what should be warm memories.
Existing apps are useful, but often too complex or require everyone to install the same app. For family gatherings spanning multiple generations, we needed something simpler — and warmer.
Need business-style splitting?
FAMIKAN Smart for Business & Dinners
"Seniors pay more", "Students pay less", "Late arrivals get adjusted" — complex tiered splits are set up in seconds with presets. Features like edit-locking and graph-enabled share text are built for organizers.
- • Role-based tiered split presets
- • Edit lock & graph-enabled sharing
- • Perfect for work dinners & mixers
Frequently Asked Questions
Add up the month's gas, tolls and parking and split it by ratio. With $350 in costs, three riders at 1.0 and the driver at 0.5, each rider pays $100 and the driver $50.
That's for your carpool to agree on. If you do, add a monthly amount, say $60, as a payment by the driver, and it's split by the same ratios as gas.
Give them a slightly higher ratio, such as 1.2, to reflect the extra distance. Everyone else's share adjusts automatically.
Keep everyone at 1.0 and have each driver log their own gas and tolls. At month end, the settlement nets it all out, so only the difference changes hands.
Record the payment under "Settled payments". It's deducted from what they owe, and only the difference, if any, stays in the settlement.
Yes. Lock the finished month, then duplicate it from the history on the home page. The riders, ratios and currency carry over, and the expenses start empty.
Yes. Every bill-splitting and settlement feature is free to use, and no registration is required.
No. It runs entirely in your web browser. Just share the link and everyone can access it immediately on their phones.
Yes, you can select the currency when creating an event (almost every official currency in the world). You can unify calculations easily for trips abroad.
Yes. You can switch between three views — "Settlement", "By Member" and "By Item". You can see what each person paid and owes, and for any single expense, who is covering how much. Everyone sees why the number is what it is, on the same screen.