The industry standard is 30% of your income. So if you make Rs 10,0000.00 a month that’s $3,0000.00. Now that does not mean you have to do 30%. If you can do 20% that’s better cause now you can put that extra 10% to saving. But just say you write down all your expenses and are reasonably going to stay at about that and you can afford 45% then that just means you can afford more. But most landlords like to see it in the 30% area and they do check so it’s not just your word.