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In the thrill of buying a new home, it's easy not to think too hard about your mortgage rate. Aren't the rates all pretty much the same? Does a little bit of a difference two places after the decimal really matter?

You might be surprised.

The U.S. Census says the median price paid for a new home in February 2018 was $326,800.

Let's say you buy at that price, put 20% down and snag a 30-year fixed mortgage at 4%. You'll pay about $187,896 in interest over the life of the loan.

But if you settle for loan at 4.15% instead, you'll be looking at interest charges potentially totaling around $196,073 — about $8,200 more!

Here are four tips for getting the best possible mortgage rate.

1. Look your best as a borrower

A man in a suit with a clock on his arm straightens his tie
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Spiff up your credit before you borrow.

You'll score a low rate if you can convince a lender that you're a low risk.

So, check your credit score and take steps to raise it, such as paying down your debts to give yourself a lower debt-to-income ratio.

A mortgage company wants to know it will be repaid. If you can make the lender feel comfortable, you will get a sweeter deal.

2. Look your best as an earner

Close-up Of A Smiling Woman Showing Company Cheque
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You'll look better to a lender if you're an employee, not an entrepreneur.

It's best not to apply for a mortgage until you've had the same employer for two years or more.

Know that lenders favor borrowers who are employed by businesses, versus people who are self-employed and freelancers.

If you work for yourself but your spouse works for a company, you might get a much better mortgage rate if the loan is taken out only in your spouse's name.

3. Put more money down

BRIBE: Businessman counts and puts down a heap money on a table
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Low-down-payment options are available, but they won't get you the best rate.

Sure, there are mortgages that require just a small down payment or even no down payment at all, especially when you're a first-time homebuyer.

But If you put down at least 20% of the cost of the home, you can land a lower interest rate.

Not only that, but you also can evade pesky private mortgage insurance.

4. Weigh your options

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Comparison-shop and look at other loan types if you want to be sure you're getting the lowest possible rate.

Shop, shop, shop around and compare rates. Don't just grab a loan from the very first company you talk to.

Be aware that interest rates vary across loan types. Adjustable-rate mortgages have lower rates than fixed-rate loans, and shorter-term mortgages beat 30-year loans.

In some cases, government-insured loans, such as FHA mortgages, will offer better rates than conventional loans.

Your mortgage interest rate is a choice that could be with you for years. Make a wise decision for maximum savings over that time!

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