Why Google didn't pay in full?

I don't know how they calculate payment, I didn't get full payment

[burntan]

I just checked my Adsense earning and notice that there is payment approved on 24-May. I am so happy as this is the first payment from Adsense, however I also notice that the payment is not the full amount I earn so far, just about 80% of it, why?

I started Adsense since Feb this year and I am running a small site with very few clicks. I manage to earn more than $100 during April but since my PIN not arriving yet, I don't expect payment from Google. After the first week of May, I finally receive the PIN and entered to the system, but now they payment approved by Adsense seem like only pay up to April earning but not including those clicks from May, why?

[ken_b]

May clicks will be paid in late June. Payments run somewhere around 30 days, give or take a few, behind earnings.