Carl says all it takes is “smart decisions along with intelligent saving and investments”.
Writing on their blog Mr and Mrs 1500, the American husband-wife duo say they began to vigorously track their savings and cut their spending. Carl wrote: “My wife and I wrote all of our expenses in a book.
Every time we returned from shopping or paid a bill, we logged it.”
The couple set themselves a target of living off of £18,000 a year, with a $6,000 (£4,500) cushion.
They then committed to putting £1,500 a month away towards investments, which stood at $570,000(£442,000) in order to build their mega savings to $1million (£700,000) in just 1,500 days.