With household costs on the rise, many mortgagees are struggling to balance their budgets. It's not surprising more Australians are skipping mortgage payments to help make ends meet.

However, missing loan repayments could land you in a bigger hole. Not only will you be up for late fees — ranging from a manageable $9 to a stinging $195 per overdue payment — but you could be adding thousands of dollars of extra interest to your debt.

At worst, a string of missed mortgage payments could see the bank recalling your loan, forcing a fire sale of your home. Even a couple of missed payments could put a red flag on your credit history, which is going to cramp future borrowings.

One of the best ways to reduce the risk of mortgage stress is to give yourself a buffer on your budget. In Australia, it's recommended borrowers' mortgage repayments make up no more than 30% of household income. The problem is many home owners borrow to the edge of the threshold when interest rates are low — as they are now — leaving no room for inevitable rate rises and other increased living costs.

Instead, budget for mortgage repayments at a 9% interest rate, a long-term average that accounts for peaks and troughs over the long run. When rates are low, stick the extra funds into your mortgage. You will not only save on interest but will have established a safety net, which you can draw on if needed when rates run high.

If you are already feeling the pinch and struggling to make payments, talk to your broker sooner rather than later. A broker can help negotiate with the lender on your behalf and can look into other loan options to ease the squeeze.