PORTLAND (AP) – Commuters will pay more but occasional users will not see an increase when new rates go into effect for Amtrak’s Downeaster next month.

Commuter tickets will increase by 7 percent, the Northern New England Passenger Rail Authority announced. The increases will only affect monthly commuters and 10-Ride passes.

John Englert, the rail authority’s executive director, said monthly passes still work out to less than $9 per trip between Portland and Boston.

One-way tickets will remain $21, the same rate that has been in effect since the service began in December 2001, and midweek discounts are available to passengers making a same-day round trip.

FlexPass tickets, which allow riders to make six one-way trips on either the Downeaster or on a Concord Trailways bus, remain $99.