Last year I didn't claim either FTA, B and CCB as our estimate fluctuated so much. Once I had lodged my tax I went into Medicare and picked up a lump sum claim form which you complete and lodged. As long as you have lodged your tax it will be matched up as does FTA & B if you have these paid fortnightly (ie you get the supplements etc) and paid out. From memory mine took 3 weeks (end of Sept). You maybe able to do it online this year but I am not sure.

Please be aware if you recieved CCR based on the full amount you paid out, but are entitled to CCB they will adjust the figure to pay off the over payment of CCR. For example I paid the full amount last year of $180 per week and because I had been getting back $90 in CCR at the end of the year I had to pay back $1000 from my CCB payment as that was the % I was entitled to throughout the year and been overpaid by way of CCR.

Hope I didn't confuse you anymore than this stuff already is.