When can shopping turn into savings? When you join the boomerang CREDIT UNION ‘Save It Up’ program. Just choose to round up to $1, $5 or $10 dollars on your Interac purchases. This money is then transferred into an unlimited usage, high yield Savings Account with a daily interest rate of 2.10%. Think about it – if you make daily purchases where you set aside $10 a day, this program can yield nearly $4000 in just one year. It’s your personal reward plan. boomerang CREDIT UNION, where your money comes back to you!