How do I navigate Seattle toll roads (SR 520 & I-405) in a rental car without incurring high daily admin fees?

Detailed answer

When renting a car at SeaTac and planning to drive on Seattle toll roads such as SR 520 and I-405, out-of-state visitors often face high daily admin fees charged by rental agencies for using their electronic transponders (Good To Go! passes). To avoid these fees, visitors have a couple of options. Firstly, if they have their own Good To Go! pass, they can use it in their rental car, as most rental agencies allow this. Alternatively, they can choose not to use the rental agency's Good To Go! pass and instead pay their tolls online within 80 days of their trip. The toll amounts vary depending on the time of day and the specific road segment; for example, the toll for crossing SR 520 during peak hours can be around $4.30 for a standard vehicle. By paying online, visitors can avoid the daily admin fee of up to $4 per day charged by the rental agency for managing their toll payments. It's also worth noting that some rental agencies may offer their own toll payment plans or services, so it's a good idea to check with them when renting the car.