What will the couple do with their new fortune? A holiday with extended family is on the cards.
"We thought it would be really special to be able to have the whole family, including grandchildren, on holiday together, so that will definitely be something we will do with the money."
However, the couple say they will reinvest the money and not touch it for five months.
"It gives us the chance to think clearly about how we want to spend it. It's a lot of money, it will change things for us, we want to be wise," she said.
The couple believe the biggest impact the win will have is on the way they will live in retirement.
"We can enjoy the little things more, like taking trips and dining out without having to worry about always eating into our savings."
The couple won $5,000 when they initially invested in Bonus Bonds in the 1990s. They only had $10,000 invested in Bonus Bonds when they won $1 million.
"We've had great odds so far ... we'll definitely be re-investing," she said.
To date the youngest Bonus Bonds holder to win $1 million was just three years old and the oldest was 92.
Bonus Bonds can be purchased for a minimum of $20.
Every month a draw is held with one prize of $1 million, $100,000, $50,000 and multiple $5,000, $100 $50 and $20 winnings paid out.