Toll bill in Austin? Pay the right authority, fight bad fees

Short answer

Austin-area tolls belong to TxTag or the Central Texas Regional Mobility Authority depending on the road. A pay-by-mail bill left alone picks up fees and can end in collections or a registration block. Confirm which authority bills you, pay the tolls, and dispute fees through that authority's process.

Who this is for

Anyone with a Central Texas toll bill, a collections letter for tolls, or a registration hold tied to unpaid tolls.

The steps, in order

1. Identify the road: MoPac express, 183A, 290 Toll, 71 Toll, 45 Toll, and 183S are Mobility Authority; most state toll roads are TxTag.
2. Pull the balance from the right authority's pay-by-mail portal with your plate number.
3. Pay the base tolls first; fees are the part worth disputing.
4. Dispute wrong fees in writing and keep the confirmation.
5. If a registration hold is in place, ask for the release steps once the tolls are paid.

Have this ready

• Your license plate number
• The bill or collections letter
• The roads and dates if you know them

Common mistakes to avoid

• Paying a collections letter before checking the authority's own balance.
• Ignoring the first bill; fees stack monthly, not once.

Common questions

Which authority bills for MoPac express lane?

The MoPac express lanes and roads like 183A are billed by the Central Texas Regional Mobility Authority. Most other Central Texas toll roads bill through TxTag.

Can unpaid tolls block my registration?

Yes. A habitual violator finding can put a hold on vehicle registration. Paying the tolls with the authority is what starts the release.

Official sources

• Central Texas Regional Mobility Authority pay a bill
• TxTag

Checked August 26, 2026. Recheck the official page monthly and when the official page changes.

Related

• Choose an Austin toll pass: one tag for every toll road