You've checked the numbers over and over.

And yes, each time they have matched. You've just won a life-changing jackpot.

This is a hypothetical most of us can only dream of — not for one SA ticket-holder who won the entire $150 million Powerball jackpot last night.

But sometimes it's fun to wonder: "What would I do if it was me?"

If you ever find yourself receiving an unexpected windfall, whether it be from an inheritance or lotto win, it's important to ensure you receive the maximum benefit from your good fortune.

So we spoke to four financial advisers to get their tips on what to do if you were to win big.