Online orders for the phone start on November 14 at T-Mobile's website. Currently, visitors to the site can only "pre-register" for more information about the 4G LTE device.
The No 4 US carrier is also scheduled to start selling Nexus 5 handsets in person before the end of the month. Its retail stores and select dealers are due to get it in on November 20.
The Nexus 5 has been on sale in the Google Play Store in unlocked form since its launch on October 31.
T-Mobile Nexus 5 price
T-Mobile is the second US carrier to start selling the LG-manufactured Nexus 5 after Sprint did the same today.
Sprint launched the phone for just $50 for new customers through an online offer, while existing subscribers have to fork over a full $150 for the new Android phone.
That deal is matched and beaten on T-Mobile, which is charging $41.99 up front for the Nexus 5 and $17 monthly payments for 24 months.
T-Mobile's plans are typically cheaper too, pound-for-pound or megabyte-for-megabyte.