For every parking dollar spent (subtotal before taxes and fees), 4 points will be counted towards your elite status. These are called qualifying points.
The points that you use towards free parking are called redeemable points.
Spot Club members earn 4 redeemable points per dollar.
Gold members earn 5 redeemable points per dollar, a 25% bonus for every dollar spent.
Platinum members earn 6 redeemable points per dollar, a 50% bonus for every dollar spent.