A common guideline is to keep rent or housing costs to around a third of your income before tax. It is a starting point, not a rule. Where you live, how many people share the cost and your other commitments all matter. If housing takes much more than that, look at where else you can give.
General tips from the Cashflow Team, not financial, tax or legal advice. Your situation is different, so talk to a qualified professional before big decisions.
Track it in Cashflow
Cashflow: Budget Manager is a free app to scan receipts, set budgets and savings goals, and see where your money goes.