BG I have a couple of questions regarding this hopefully you can help me out

Ive done my income estimate via online services and said i dont have to lodge a tax return as i earned under $6k and was advised to do this by a tax agent now DH has only just lodged his tax 2 days ago so I should see some money within the next say 4 weeks?

Another question I owe $144 to centrelink (not for advances it classes as owing the commonwealth so i cant apply for advances) we said yes on the e-tax program for DHs tax to pay any debt of my owing, a) does that include this debt? and b) do i still get some money due to this?

Also Im trying to budget and have no idea how much centrelink even pay around tax time, does it depend on DH's ATI? is there some way of finding out before hand how much i will get?

i know my questions sound really money hungry lol but i have a lot of bills to pay!