Where the money goes
Categories are calculated from the exact entered-cost total, including each line's tax or fee percentage.
OneFreePlace · Tool #130
Build the whole trip budget—with the rules behind every expense visible.
Model fuel, flights, lodging, food, tolls, parking, tickets, insurance and anything else using per-trip, per-person, per-day, per-night, per-room or per-vehicle rules. Add taxes and fees, uncertainty ranges, booking status, contingency and a target budget—then stress-test group size and trip length before you commit.
✓ Flexible cost rules✓ Taxes + fees
✓ Low / expected / high range✓ Booked vs estimated
✓ Budget stress testing
Trip Cost Calculator
Flexible multipliers · uncertainty · commitment tracking · target budget
Trip structure
Set the dimensions that your expenses can scale with.
Budget controlsThe contingency is shown separately from the entered-cost total.
Expense modelQuantity × unit cost × rule multiplier × (1 + fee/tax).
Uncertainty ±% creates the low/high planning range but does not alter the expected total. Status is informational: Estimated, Booked or Paid all count toward the trip total.
Expected trip cost
Calculating—
entered-cost total
Build a valid trip budget.
Per traveler—equal-share view of full trip
Per trip day—whole-group daily average
Per traveler-day—useful cross-trip benchmark
Protected budget—expected + contingency
Committed—booked + paid
Still estimated—not yet booked or paid
No target budget setAdd a target if you want a gap / headroom check against the protected budget.
Budget intelligence
Simple, transparent observations about what is driving this plan—not generic travel advice.
Party-size sensitivity
Only per-person and per-person/day expenses change. Shared, room, night and vehicle costs remain on the rules you entered.
Trip-length sensitivity
Each scenario changes days and paid nights together by the shown amount while keeping people, rooms and vehicles fixed.
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Uncertainty is a planning range, not a statistical forecast.If a hotel quote is firm, set that row's uncertainty to 0%. If a category is still uncertain, use a range that reflects your own confidence. The tool never pretends every expense will simultaneously hit its worst case with a known probability.