Ahsanallahu ilaykum, Ustadh. I know an approximate amount for my zakat but not the exact figure. It will take a few weeks to calculate it a bit more accurately. Can I pay a bit extra now to ensure I’ve fulfilled my obligation?

Ustadh AbdulAziz al-Haqqan

Give zakah for what u own now if it is time, as for what u will be paid later as salary or so, this is for next year's in sha'a Allah.