Back-to-School Shopping Mistakes to Avoid

A new school year is gearing up and although financial resolutions are usually a New Year’s tradition, the end of summer warrants its own plan for your money. Whether you’re shopping for your kindergartener, high school senior, or combination of kids across grades, those school supply lists can quickly take a huge bite out of your bank account.

Here’s how to navigate the back-to-school season in confidence with eight mistakes to avoid before you start shopping.

Mistake #1: Not referencing the school supply list

The first mistake to avoid when back-to-school shopping is to ignore the school supply list. Don’t just assume that your child needs a few binders, paper, and pencils. Instead, find out exactly what you need by referencing the list so you spend your money on the right items.

Check your kid’s school website if you don’t have a copy of the supply list. Alternatively, many major retailers also have an online zip code look-up feature that lets you search for your child’s school and access a shopping list. 

Mistake #2: Avoiding a budget

Even though your student has a list of required items, it doesn’t mean you can’t create a spending plan that works within your budget. Calculate how much extra cash you can devote to the new school year. 

If you need or want more to work with, consider cutting back other spending areas for the month, like eating out, or find ways to save on the shopping list (we’ve got some tips for that coming up). As you estimate how much you need to spend, remember to incorporate other expenses that may not be on the supply list, like elective fees and sports dues. 

Also consider including your kids and framing the budget as a challenge. Involving them in your back-to-school spending goals is a great way to teach them about money.

Mistake #3: Missing state tax holidays

Some states offer a sales tax holiday during the summer months, which could give you a little extra breathing room in your back-to-school budget. As of 2026, 17 states have some type of sales tax pause before the school year starts. There are often limitations on spending categories and limits, so check to see what purchases qualify where you live and what dates qualify. 

The average sales tax in the U.S. is 7.53%; when you’re spending several hundred dollars on clothes and technology, those savings can help stretch your budget. If you miss the weekend, set a calendar reminder for the next year!

Mistake #4: Buying duplicate items

Just because something is on the supply list doesn’t mean your child needs a brand new version. Check your stash at home before heading to the store. Dig in desks, closets, and drawers to see what you already have. Binders, notebook paper, colored pencils – your kids may still have plenty of school supplies leftover that can be reused for the next year. 

And if you have multiple kids in different grades, try handing down items like bookbags, lunch boxes, and calculators. They may not fit your older kids anymore, but some things could be just right for your younger ones. Then you get to check off those items from the list without spending a dime!

Mistake #5: Shopping at one store

It may be convenient to do all of your school shopping in one place, but it may not be the best move for your wallet. Once you’ve done an inventory at home and know what remaining items you need for the year, check out multiple online ads before heading out to shop. There could be major price variations that could help you save cash by making a few different stops. 

Mistake #6: Skipping the thrift store

Buying some things secondhand can stretch your budget further (and your kids’ friends won’t even notice). Check out thrift stores for inexpensive clothes, backpacks, water bottles, and even supplies like binders and paper. 

If your child has a long reading list for the year, search online secondhand sellers for their books. Instead of spending $15 on each AP English novel, you can easily find used editions for under $5 with free shipping.

Mistake #7: Buying a new fall wardrobe all at once

Back-to-school season feels like the right time to upgrade your kid’s closet with new jeans and sweaters. But in many parts of the country, the weather is still warm and you may not actually need those extra layers for cool temperatures just yet. Consider starting with a few basic clothing items, then add more pieces as the weather shifts. 

Not only do you spread out costs over time, you also shop for the right sizes for your constantly-growing kids. That way you won’t worry about an unexpected growth spurt sending you to the store for even more new clothes!

Mistake #8: Forgetting to plan ahead

Remember that school costs don’t stop after the first day. Keep budgeting for things like field trips, school pictures, teacher gifts, formal outfits for Homecoming, and more. Map out the entire school year and make a budget for seasonal events through next summer. 

From prom to summer camp, estimate your future spending based on your child’s age and start setting aside extra cash each month to cover those costs. You could even plan a no-spend challenge to boost your savings. 

The Bottom Line

You may feel sticker shock when you first glance at the school supply list over the summer. But by shopping your home, considering secondhand purchases, and strategically planning new purchases, you can keep those costs more manageable than expected. Starting the school year with financial confidence goes a long way in supporting your children’s emotional confidence as well.