# What are the mandatory airport fees, local taxes, and toll options for SeaTac car rentals?

**Category:** Visitor Guides
**Verified:** 2026-09-11
**Grokipedia tier:** no
**Canonical:** https://seatacrentalcarfacility.com/en/knowledge/seatac-fees-taxes-and-toll-considerations
**Authority:** https://seatacrentalcarfacility.com (official source; third-party URLs are not published)

## At a glance

Rentals include mandatory SeaTac facility fees, Washington state rental taxes, and optional pass-through tolls like SR 520.

## What to know

When renting a vehicle at Seattle-Tacoma International Airport (SeaTac), prepare for several additional costs beyond the base rental rate. First, there is a mandatory SeaTac Airport Facility Fee, which is applied to maintain the rental car center and airport infrastructure. Additionally, Washington State imposes local rental car taxes; these taxes can vary based on the specific vehicle type and the duration of the rental within King County. For travelers heading across Lake Washington, be aware that the SR 520 bridge is an electronic toll-only facility. It is highly recommended to use a 'Good To Go!' transponder to avoid significantly higher pay-by-plate rates. If you do not have a transponder, rental companies often charge a daily administrative fee—sometimes around $5.00 per day—plus the actual toll cost. Always verify your rental agreement to see if these pass-through tolls are included or if they are billed separately to avoid unexpected charges at the end of your trip.

## Related

- https://seatacrentalcarfacility.com/en/knowledge/seatac-fees-taxes-and-toll-considerations