"So your saying then that that 2.5% rental return from...

"So your saying then that that 2.5% rental return from investment properties is after all costs including interest payments."

$100K your money
$200K borrowed

Rent pa $18200 (6%)
Interest, amortised purchase costs $14,500
Rates, insurance, maintenance $1,200

Return (18200-14500-1300)/100000 = 2.5% pa

You are doing worse than that. Your return is zero.

Your original claim of 10% return, which is where we started, is bogus.