Unless you’re careful, a new baby can take a surprisingly big bite out of your budget. Here’s an overview of some the smartest ways to save on baby gear. For more ideas on specific products, see the new 10th edition of Consumer Reports Best Baby Products, available in our online bookstore and at bookstores nationwide.

Take advantage of freebies and coupons. If you don’t mind getting your name on mailing lists, call the toll-free customer-service lines or register at the Web sites of formula, baby-food, and disposable diaper companies for their parenting newsletters and new-parent programs, including coupons and free samples. Even if you don’t register, you may get them anyway. Somehow, when you have a new baby, word gets out.

Consider a discount club membership. At places like Costco or BJs Wholesale Club, you’ll reap discounts on everyday items you’ll use a lot, such as disposable diapers, baby wipes, and laundry detergent. Sign on for the loyalty savings card program at your drugstore and supermarket and you’ll receive discounts that can rack up savings.

Buy as your baby grows. Except for the basics like a car seat, clothes, and a crib, don’t buy baby products until you’re sure you’ll need them. The wait-and-see approach gives you time to check with friends about their experiences with specific baby products and ultimately can save you money. You may be able to borrow some items. Others might not seem necessary once you understand what your baby’s needs are.

Watch for sales. Retailers such as Toys “R” Us, Babies “R” Us, and BuyBuyBaby routinely put out newspaper inserts and in-store fliers with big savings on brand-name baby items.

Go online. If you shop online, compare prices of cribs, changing tables, and hundreds of other baby products quickly by logging on to a shopping Web site such as www.bizrate.com, www.epinions.com (which also offers product advice from fellow parents), www.nextag.com, or www.shopping.com. For additional savings online, log onto sites such as www.couponcabin.com for online coupons from major e-tailers. Be mindful of shipping costs—they can sometimes wipe out any savings.

Consider buying some items used. Gently used baby clothes and toys can sometimes be found in thrift stores, online, and at yard sales at a small fraction of their original retail prices. But some items such as car seats and cribs always should be purchased new to ensure they comply with updated safety requirements and have no hidden flaws.

Weigh warranties. Hold on to warranty information so you can refer to it if there’s a problem. You may find a warranty being used as a sales tool. Some less expensive but adequately firm baby mattresses, for example, offer no warranties, while top-of-the-line models may have a “lifetime guarantee.” Is that protection you need to pay for? You’ll find the answer in the crib mattress chapter of Consumer Reports Best Baby Products.

Power your showers. Be sure you get the gifts you want and will use. Explore the marketplace yourself and then register with retailers that stock your choices, including major online merchants, like Amazon.com. Don’t hesitate to request practical items. Although frilly baby clothes are often a gift-giver’s first choice, a supply of diapers or formula can mean much more. Register for and request bigger-ticket gear too, like a stroller, play yard, or changing table.