display cell to show only Month/year to do sumif calc if today()= any day of month

Hello all, this one has to be simple and i'm just not finding it.

I have a cell P2 that I want to display only the month year.

Then In cell t3 I want to do a sumif calculation where the criteria would be anyday in the current month.

It's just a simple bill tracker and I want cell t3 is show the aggreagted cost of bills for the current month.

Sheet attached.

please show my stupidiy with excel

thanks in advanced

See if this can helps you.