Glittery tree decorations aren't the only things popping up in some stores and shocking shoppers weeks before Halloween. Some credit card holders already are spotting 0 percent credit card deals to drive up holiday spending.
Some card holders with the Toys R Us MasterCard offered through Synchrony Financial are being offered a 0 percent rate for purchases made outside the toy store chain and its Babies R Us stores. The deal runs through March 31, 2016.
The tagline on the mailing: "Holiday gifts are within reach."
But watch out, after the promotion ends, the annual percentage rate hits 26.99 percent and would apply to any remaining promotional balance.
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Miss a monthly payment? You're hit with the higher rate. Consumers must make minimum monthly payments during that 0 percent promotional time period.
Credit card watchers predict that this holiday season will be stocked with plenty of low-rate deals that are designed to encourage consumers to open new credit cards and spend heavily on the cards they already carry in their wallets.
"It seems like the holiday season is getting earlier and earlier," said Odysseas Papadimitriou, CEO of CardHub.com and WalletHub.com.
"A lot of hype is going to come from retailers about 0 percent offers."
Retailers are optimistic that consumers have a long list of reasons to splurge on gifts for Christmas and the eight-day celebration of Hanukkah, which begins this year at sundown Dec. 6.
The jobs picture looks better. Home values are stronger. Relative bargain prices at the gas pump make more room for extra gifts in monthly budgets. The Deloitte annual retail holiday sales forecast is predicting a 3.5 percent to 4 percent increase in holiday sales in November through January compared with last year's shopping season. That's down slightly from last year's 5.2 percent gain.
Every extra bargain, every extra deal, every extra 0 percent rate can help fuel that spending.
But if you really want to save money this holiday season, keep a watchful eye on the details of these offers:
-- What's that 0 percent rate really going to cost you in the long run?
Papadimitriou, of CardHub.com, said consumers want to make sure that they understand how the rate could climb after the introductory offer and know exactly when those higher rates will hit a credit card balance.
Many times, some 0 percent promotions are viewed as a deferred payment, and double-digit rates might be charged back to the purchase date if you don't pay the bill in full before the promotion ends, he said.
Consumers need to ask: Is that interest going to accrue on the purchase?
Deferred-interest products can be risky because good intentions don't pay bills in full. In some cases, you'd owe interest going back to when you first made the purchase. So you risk not being able to get 0 percent in November and December.
Some of the promotions for these offers aren't always specific, so it pays to call your card issuer and ask for detailed rules.
What happens if you're late with a minimum payment?
If you're late, many times the 0 percent introductory rate or limited 0 percent rate could end immediately, said Bill Hardekopf, of LowCards.com.
The Consumer Financial Protection Bureau in 2013 criticized deferred-interest rate programs and noted that 43 percent of borrowers with not-so-great credit did not pay off their balance before interest kicked in when they participated in a deferred-interest program.
The deal can work for people who carefully watch due dates, regularly pay bills on time and could have paid cash on the spot anyway.
-- Could you get an even better 0 percent deal if you shopped around?
It sounds great to have your card issuer offer 0 percent for a six-month period. But if you've got good credit, you might qualify for some deals on new credit cards for 0 percent for 12 months, 15 months or 21 months, experts said.
Two Citi cards -- Simplicity and Diamond Preferred -- offer a 0 percent annual percentage rate for 21 months on purchases, according to LowCards.com.
Chase said it is offering a 0 percent introductory offer for 15 months on purchases after opening a new Chase Slate account. After the first 15 months, a variable APR of 12.99 percent, 17.99 percent or 22.99 percent applies, based on one's creditworthiness.
If doing a balance transfer, 0 percent rates often apply, but pay attention to any balance transfer fees on those offers.
-- Are you paying attention to what card makes the most sense for specific holiday spending?
Various deals will be popping up to goose up rebate points and rewards this holiday season, too.
Chase Freedom cardholders are being offered a 5 percent cash-back rebate on combined purchases up to $1,500 at Amazon.com, Zappos.com, Audible.com, and Diapers.com during the fourth quarter. That's a nice $75 in savings if you spend to the maximum.
But you've got to pay attention to what cards offer what deals and what spending makes the most sense for you.
You cannot get too caught up in spending more than you should.
After all, if we start holiday shopping before Halloween, we could be pulling out our plastic for tons of toys, glittery decorations and fancy food for nine weeks or more.
Susan Tompor, the personal finance columnist for the Detroit Free Press, can be reached at stompor @freepress.com.