Updated: March 26, 2015

Stop wasting money on interest fees! If you're carrying balances on high-interest credit cards or you need to make a purchase that you won't be able to pay off right away, there's no need to waste money paying interest. In fact, you can avoid any interest payments at all well into 2016.

Credit card issuers are pursuing potential customers by offering extremely generous 0% APR intro deals for truly lengthy periods of time. Take advantage of the available offers to save yourself a ton of cash, or to give yourself some breathing room and time to pay down your balances.

We've done the research and put together a list of the top cards with 0% intro APR periods so long you won't pay any interest until September 2016.

Citi Simplicity
Can you say 21-month 0% APR? It's true, with Citi Simplicity (a NextAdvisor advertiser) you'll enjoy no interest on balance transfers and purchases until 2017 (not just until 2016!), providing plenty of time to pay down your balance. Plus there are no late fees, no penalty fees and no annual fee. Overall this is a stellar pick for anyone looking to save money on interest fees as they work to decrease their balance, or someone who'd like to make a large dollar purchase now and not worry about paying interest until next year.

The Citi Diamond Preferred Card
Offering an 21-month 0% APR period on balance transfers and purchases, this card is a winner. And after the over 1.5 year zero interest period is up, you'll enjoy a low ongoing APR. Plus there's no annual fee to worry about. Even if you don't have any balances to transfer, this card is still a great way to make purchases now (spring vacation anyone?) and pay no interest until 2017.

Discover it Card – Balance Transfer
When you combine a terrific 18-month 0% intro APR with cash back rewards, it's hard to go wrong. Although the 18-month 0% intro APR is just for balance transfers, you can also take advantage of a 6-month 0% intro APR on purchases and the low post-intro APR rate. Plus you'll earn 5% cash back on categories that rotate quarterly and 1% cash back on everything else. From now through March 31st you'll get 5% back on gas and ground transportation like rental cars and taxis. Did I mention there's no annual fee and no foreign transaction fees? This means you can make purchases outside the U.S. without worrying about extra fees, which is a nice touch if you're traveling internationally in the future.

These cards don't quite have the incredible 18-month 0% APR the other cards do, but they're still strong contenders:

Chase Slate
With a 15-month 0% intro APR on balance transfers and purchases AND the honor of being the only 0% intro card that doesn't charge balance transfer fees, this is our top-ranked balance transfer card. All this and it's targeted at those with "good" credit rather than "excellent" credit. Good credit is generally considered to be a credit score between 649 and 720, although other factors may come into play. Slate's zero balance transfer fees can add up to serious savings, as many cards charge up to 3% of the amount you're transferring. Chase Slate allows you to transfer your balances from other credit cards without paying a cent, and gives you the time you need to start paying down the balance. The 15-month 0% APR period will take you into 2016 with zero interest payments, and it's a great card to help you manage any credit card debt you may currently have or to make large purchases now that you don't want to pay off until next year.

Blue Cash Preferred from American Express
Coupling great cash back benefits with a 0% intro APR for 15 months, Blue Cash Preferred from American Express (a NextAdvisor advertiser)  is the best of both worlds. You'll earn 6% cash back at supermarkets (on up to $6K in purchases annually), 3% at gas stations and select department stores like JCP, Nordstrom, Sears and Macy's, and 1% cash back on everything else. You'll also get a $150 intro bonus after spending $1,000 in the first 3 months. And you won't pay interest on your purchases and balance transfers for 15 months, saving you on interest fees well into 2016. Take advantage of 0% intro APR by making any large or small purchases you need now, and you'll have 15 months of $0 in interest to help pay down you balance. There is a $75 annual fee, which most users will more than earn back by making their usual everyday purchases. However, if you're interested in a similar no-annual-fee card that also features strong cash back rewards and a 0% intro APR period, take a look at the Blue Cash Everyday from American Express.

Disclaimer: This content is not provided or commissioned by the credit card issuer. Opinions expressed here are author's alone, not those of the credit card issuer, and have not been reviewed, approved or otherwise endorsed by the credit card issuer. This content was accurate at the time of this post, but card terms and conditions may change at any time. This site may be compensated through the credit card issuer Affiliate Program.

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