You don’t really withdraw money from AdSense. They pay you automatically if you meet the criteria. Those are:
- tax information entered (only North America)
- address verified
- form of payment entered
- threshold reached – $100 or €70 or equivalent amount
You can change the threshold in your AdSense account to something higher.
As long as you don’t reach the threshold, payment is hold back and your revenue summed up. The payment is made in the month that follows a month where you reached the threshold.
AdSense starts the payment process on the 21st of that month. Depending on your payment method, it can take up to 10 days until the money reaches you.
