Is a mortgage a smart way to pay for college?

Q: My wife and I have no debt. Our home, cars and credit cards are paid off. We make the maximum contributions into our 401(k) plans, although we don’t take advantage of catch-up contributions. But because our kids will be going to college in four years, should we take out a home mortgage now to lock in a low rate and deduct the interest payment? This way we will have some money to pay for college without borrowing from our 401(k) plans.

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