This is something I had to figure out myself just by looking at my cc acount and credit report every month. This is how I do mine:

Due Date - 18th

Statement date - 21st to 24th (changes each month)

Whatever you do, make sure you pay at least the minimum payment by the due date. Never pay late.

I get paid every 15th so I make a payment every 15th, but somethimes I make payments during the month if I charge a lot that month.

If I want to carry a balance to show uitl:

Due date - 18th

Payment made - 15th - for less than the total balance

Statement date - 23rd - will show a balance with interest on whatever portion I didn't pay

If you want to show zero balance, pay your entire balance on or before the due date.

I hope this helps.