The 2018 San Andreas State Tax Refund
Log in to GTA Online at any point between February 16th and 26th to qualify for a GTA$250,000 stimulus bonus. Also, all GTA$ spent in GTA Online between February 16th and 26th will get you a 10% rebate (up to GTA$1M cash back). Then come back after February 27th to claim your GTA$ stimulus bonus and GTA$ rebate.
All GTA$250,000 stimulus bonuses and GTA$ rebates will arrive in your Maze Bank account between February 27th and March 6th.