I'm toying with the idea of converting the PPOR (which has one room rented out), completely into 100% IP. I'm wondering how I go about doing a full cost comparison for each scenario. I'm okay with basic accounting but it is getting a bit fuzzy for me when I start to consider depreciation implications (I have a dep'n schedule). I want to know net of all taxes/depreciation/expenses etc. what my annual outlay would be in each scenario. If they are a similar amount I will continue with current living arrangements. If they are significantly different I might move into a rental. Are there any spreadsheet templates that could give me the answers I need or am I best off visiting an accountant?