Then, if you elect to keep the bonus money in your BECU account, avoid doing anything to incur a fee — such as the non-sufficient funds fee — which can eat away at your bonus. FAQs About BECU Promotions and Bonuses How long does it take to receive a new account bonus? Existing BECU customers can qualify for some promotions such as the "Refer a Friend" bonus, but usually not for new account bonuses.