I fronted the group-trip costs and came home as everyone’s collections department

I put the rental house on my card because the booking site needed one payment.

Then I paid for the rental car because the reservation was in my name. At dinner, the restaurant would not split the check the way we expected, so I handled that too. By the final day, “I’ll send it to you” had become the trip’s unofficial payment method.

We have been home for six days. Two people paid immediately. One sent a round number that does not match anything. One says she is waiting for me to calculate her share. Another has not replied.

I have receipts, but the categories are messy. One friend skipped the expensive dinner. Two people used the rental car for an extra day. Groceries included personal items beside shared breakfasts. Every fair adjustment creates another small decision, and I am the only person still doing trip administration.

The money matters. So does the role.

During the trip, fronting costs made me useful. Afterward, asking for repayment makes me feel petty. I soften every message—“whenever you get a chance”—then resent people for believing me.

Current payment-app limits, card terms, exchange rates, and any disputes need to be verified directly if relevant; I am not asking for financial advice. I am asking how to close a shared trip without one friend becoming both lender and accountant.

My plan is to send one itemized summary with the assumptions stated clearly, invite corrections by a date, and give a real payment date instead of a vague hope. For future trips, large bookings get deposits before confirmation, shared expenses are logged the same day, and nobody fronts another major cost just because their phone is already open.

Is that too formal for friends, or is formality what keeps money from leaking into the friendship? How much precision is fair when the administrative labor of reaching perfect precision falls on one person?