It was discussed at length here and by multiple bloggers when the Hyatt biz card was introduced, suggest reviewing the early part of this thread for additional information.

Personal card: 5 World of Hyatt Tier-Qualifying Night (TQN) within 8 weeks of your account open date and every calendar year after your first year 5 TQNs within 8 weeks of January 1.
and
Earn 2 TQN for every $5,000 in purchases

Business card: 5 TQN for every $10,000 in purchases each calendar year.

<$50K annual spend: Pers card more TQN than Biz
(example $45K: Pers 23 TQN, Biz 20 TQN)
$50K annual spend: Pers 25 TQN, Biz 25 TQN
$55K annual spend: Pers 27 TQN, Biz 25 TQN
$60K annual spend: Pers 29 TQN, Biz 30 TQN
$65K annual spend: Pers 31 TQN, Biz 30 TQN
$70K annual spend: Pers 33 TQN, Biz 35 TQN

(Kinda complicated, like the “catch up” charts and graphs for taking Social Security at 65 or 67 or 70, it’s challenging to figure out where the lines intersect and where you expect to be on those lines.)

I was obviously wrong with my “$50k annual spend”, should have been $60K or $70K annual spend. Think I had $50K on my mind as one of the other frequently discussed benefits of the biz card kicks in at $50K. (10% Bonus Point Redemption Bonus: … spend fifty thousand U.S. dollars ($50,000 USD) or more in Purchases on your World of Hyatt Business Card, you will receive ten percent (10%) Bonus Points back on up to a total of 200,000 World of Hyatt points you redeem for free night awards,…)