Photo by ep_jhu.

Today marks the first day of the opening phase of WMATA’s sweeping fare increases to help bridge a $189 million shortfall in its fiscal budget. But not all of the fare changes approved by the board on Thursday will go into effect today. Here’s the skinny on what things will affect your wallet beginning today:

Metrorail: The new regular base boarding fare will be $1.95 when paid with a SmarTrip card and $2.20 when paid with a paper farecard, an increase of about 18 percent. Trips taken during the period between midnight and 3 a.m. on Friday and Saturday nights will now be charged at peak prices. One-day Metrorail passes will increase in price to $9, but other Metrorail pass prices will remain stagnant until August 1.

Metrobus: Regular fare is now $1.50 when paid with a SmarTrip card or $1.70 when paid with cash. Weekly Metrobus passes will increase from $11 to $15.

Other: The transfer window is now two hours. Alterations to bike locker fees (now $200/year) and reserved monthly parking fees (now $65/year) have taken effect.

A whole bunch of other rates — including that whole peak-of-the-peak business — will change on August 1: for those changes, feel free to consult our more extensive primer.