Since APRA threw a spanner in the works last year. You will probably find that interest rates are a fair bit higher when borrowing 90% compared to 80%..(My last property I got a I/O 4.49% on 90% LVR, 3 year honeymoon rate and was pretty happy with that) Keep in mind that you will need to factor in LMI as well when borrowing over 80% LVR (this gets added on to the loan).Other costs that you need to workout as well are Stamp Duty, Conveyancing, Building + Pest inspection, Mortgage Rego fees etc.. They are going to eat in to your deposit by about $17k or more depending on the purchase price of the property and which state that it’s in.

One other thing to consider is the unlocking equity in the future. You will have to wait longer if you go 90% now.