For something a little more involved, this is what I taught a guy recently with dyslexia.
think of purchase price as $100, and deal in %s of that.
in costs 4% (may be 5% for some states)
add 1.5% if LMI
add 2.5% if Buyer's Agent
interest = whatever x lvr, say:
100% lend = 8%
75% lend, 8*3/4 = 6%
80% lend, 8*8/10= 6.4%
other holding costs = 1.5%
First year, cost is :
in costs + total holding costs
= 4+8+1.5 = 13.5%
Following year costs.
8+1.5% = 9.5%
Now that you've got those figures, just multiply by the number of 100s in your purchase price = 4000
yr 1 : 13.5 * 4000 -> 4*13+4*0.5 -> 54*1000 = $54000
yr 2n : 9.5 * 4000 -> 4*9+4*0.5 -> 38*1000 = $38000
For income, some people find it easier to divide weekly rent by 2 and add 2 zeroes.
500 / 2 = 250 and add two zeroes = 25000pa.
yield is 25000/400000 which reduces to
25/400 = 25/4 *1/100 = 6.25/100 = 6.25%