Make sure all superannuation and PAYG withholding tax are paid on time as penalties apply if they late
Keep all receipts for items you buy for work like stationary
Do you have to wear a uniform? You can claim laundry
Do you have to use your car for work; have you got a log book?
Did you have to pay for a course this year?
Small businesses can claim an upfront deduction for equipment and cars this year