 
 <translate> Answer the following Q with stream of consciousness. Passage: The House passed the penultimate version of the bill on December 19, 2017, though for Senate procedural reasons small changes were needed and a revote was held in the House. The Senate passed the final version on December 20 in a 51 -- 48 vote and that final version was passed by the House of Representatives on that same day. The bill was signed into law by President Donald Trump on December 22, 2017. Most of the changes introduced by the bill went into effect on January 1, 2018 and will not affect 2017 taxes.

Question: Based on this passage, when does senate tax bill go into effect? <hau> Amsa wannan tambaya ta Q da rafi na sani. Passage: Majalisar ta zartar da sigar karshe ta lissafin a ranar 19 ga Disamba, 2017, kodayake saboda dalilai na tsarin majalisar dattijai an buƙaci ƙananan canje-canje kuma an sake yin kuri'a a majalisar. Majalisar dattijai ta zartar da sigar karshe a ranar 20 ga Disamba a cikin kuri'u 51 - 48 kuma majalisar wakilai ta zartar da wannan sigar ta karshe a wannan ranar. Shugaba Donald Trump ya sanya hannu kan dokar a ranar 22 ga Disamba, 2017. Yawancin canje-canjen da aka gabatar da lissafin sun fara aiki a ranar 1 ga Janairu, 2018 kuma ba za su shafi harajin 2017 ba.  Tambaya: Bisa ga wannan nassi, yaushe ne dokar haraji ta majalisar dattijai za ta fara aiki? 