Colorado tollway payments work through two main systems: E-470 Public Road Authority handles the northeast metro Denver tollways, and the Northwest Passage handles I-25 north of Denver

Colorado operates tolled highways in two separate regions, each with its own payment method and account setup. E-470 manages the E-470 tollway (a loop around northeast Denver) and the T-Rex project corridors. The Northwest Passage manages I-25 between Denver and the Wyoming border. You do not have to set up an account to use these roads — you can pay tolls after the fact — but having an account in advance makes the process simpler and often costs less per trip.

If you drive a Colorado tollway without an account, the road's camera system reads your license plate and sends you an invoice by mail. If you ignore that invoice, penalties and late fees accumulate. Setting up a prepaid account before you drive means you control when and how much money goes into it, and you avoid the mail-based payment process entirely.

Key Takeaways

  • E-470 tollways and the Northwest Passage each have separate accounts; you cannot use one account on both systems.
  • You can pay tolls by mail after driving, but prepaid accounts cost less per trip and avoid late fees if you miss a mailed invoice.
  • E-470 accounts accept credit cards, debit cards, and bank transfers; Northwest Passage accepts credit and debit cards only.
  • Rental cars, commercial vehicles, and motorcycles have different toll rates and account rules on both systems.
  • If you receive a toll invoice by mail and disagree with the charge, you have 30 days to dispute it through the toll authority's website.

Setting up an E-470 account online or by phone

E-470 accounts are created through the E-470 Public Road Authority website at e-470.org. You will need your vehicle's license plate number, vehicle identification number (VIN), and a valid payment method. The account setup takes about 10 minutes and is free. You can add money to your account using a credit card, debit card, or automatic bank transfer. E-470 does not require a minimum balance, but most drivers add $25 to $50 to start.

If you prefer not to set up an account online, you can call E-470 customer service at 303-537-3470 to create an account by phone. They will ask for the same information and can set up automatic replenishment, which adds money to your account when the balance drops below a level you choose. This prevents your account from running empty mid-trip.

Once your account is active, your vehicle's license plate is linked to it. Every time you drive an E-470 tollway, the system deducts the toll from your account balance. E-470 charges different rates depending on the time of day and traffic conditions — rates are higher during peak hours and lower during off-peak times. You can see your trip history and current balance anytime by logging into your account online.

Setting up a Northwest Passage account

The Northwest Passage (I-25 north of Denver) uses a separate system managed by the Northwest Passage Tolling Authority. Accounts are created at nwpassage.com. Like E-470, you will need your license plate, VIN, and a payment method — but Northwest Passage accepts credit and debit cards only, not bank transfers. Account setup is free and takes about 10 minutes.

Northwest Passage rates are fixed and do not change by time of day. The toll depends on your vehicle type and the distance traveled. Once your account is active, tolls are deducted automatically each time you drive the corridor. You can view your balance and trip history online anytime.

If you do not set up an account before driving, the system will photograph your license plate and mail you an invoice. The invoice will include the toll amount plus a processing fee. You have 30 days from the invoice date to pay online, by phone, or by mail.

Paying tolls without a prepaid account

You can drive any Colorado tollway without an account and pay later. The toll booth cameras photograph your license plate, and the toll authority mails you an invoice within two weeks. The invoice includes the toll amount plus a one-time processing fee (typically $2 to $3). You can pay the invoice online using the link in the letter, by phone, or by mailing a check.

If you do not pay within 30 days of the invoice date, late fees begin to accumulate. After 90 days unpaid, the toll authority may report the debt to a collection agency or suspend your vehicle registration renewal. Paying the invoice promptly avoids these consequences.

This method works if you use the tollway only occasionally, but it costs more per trip than a prepaid account because of the processing fee. If you use a tollway more than a few times per month, setting up an account saves money.

Toll rates, vehicle types, and discounts

E-470 toll rates vary by time of day and current traffic. During peak hours (typically 6 a.m. to 10 a.m. and 3 p.m. to 7 p.m. on weekdays), tolls are higher. Off-peak tolls are lower. Rates also change based on real-time traffic conditions — if traffic is heavy, tolls may increase. You can see current rates on the E-470 website before you drive.

Northwest Passage rates are fixed and do not change by time of day. Tolls are based on the distance traveled and your vehicle type. Passenger cars pay one rate; motorcycles, RVs, and commercial trucks pay different rates.

Both systems charge different rates for rental cars and commercial vehicles. If you are renting a car, ask the rental company whether the vehicle has a toll account set up. Many rental companies add tolls to your final bill rather than setting up a prepaid account. If you drive a commercial vehicle, contact the toll authority directly to discuss commercial account options, as rates and rules differ from passenger vehicles.

Disputing a toll charge or invoice

If you receive a toll invoice by mail and believe the charge is incorrect, you can dispute it through the toll authority's website or by phone. You have 30 days from the invoice date to file a dispute. When you dispute a charge, explain why you believe it is wrong — for example, you were not driving that vehicle on that date, or the toll amount does not match the posted rate.

E-470 disputes can be filed at e-470.org under the "Contact Us" section. Northwest Passage disputes can be filed at nwpassage.com. Both authorities will review your dispute and respond within 10 to 15 business days. If your dispute is upheld, the charge will be removed from your account or invoice. If it is denied, you will receive an explanation of why the charge stands.

Keep records of your trips and toll receipts if you dispute charges regularly. If you have a prepaid account, your trip history is stored online and can help support a dispute.

What happens if you do not pay a toll

Unpaid tolls accumulate late fees and can affect your vehicle registration. After 90 days without payment, the toll authority may report the debt to a collection agency. This can damage your credit score. Additionally, Colorado allows toll authorities to place a hold on your vehicle registration renewal, which means you cannot renew your registration until the toll debt is paid.

If you have an unpaid toll debt and want to renew your registration, you must pay the toll and all associated late fees first. You can do this online through the toll authority's website, by phone, or by mail. Once payment is received, the registration hold is lifted and you can proceed with renewal.

If you believe a toll debt is incorrect or was issued in error, contact the toll authority when ready rather than ignoring the invoice. Disputing the charge within 30 days is much simpler than dealing with collection efforts or registration holds later.

Frequently Asked Questions

Can I use one account on both E-470 and Northwest Passage?

No. E-470 and Northwest Passage are separate systems with separate accounts. You must set up an account with each authority if you drive both tollways. The two systems do not share account information or balances.

What if I drive a rental car on a Colorado tollway?

Ask the rental company before you drive whether the vehicle has a toll account set up. If it does not, you will receive a toll invoice by mail after your trip, and the rental company may add a processing fee to your bill. Some rental companies set up toll accounts automatically; others do not. Clarifying this before you drive prevents surprises on your final bill.

Do I have to pay tolls if I drive through a toll plaza without stopping?

Yes. Colorado tollways use open-road tolling, which means you do not stop at a booth. Cameras photograph your license plate as you drive through, and the toll is charged to your account or invoiced by mail. There is no way to avoid the toll by not stopping.

Can I get a refund if I overpay my toll account?

Yes. If your prepaid account balance is positive when you no longer need it, you can request a refund through the toll authority's website or by phone. E-470 and Northwest Passage both process refunds, though it may take two to four weeks for the money to appear in your original payment method.

What if I move out of Colorado and still have a toll account balance?

You can keep the account open and use it if you return to Colorado, or you can request a refund of the remaining balance. Contact the toll authority by phone or through their website to close the account and process the refund.