# How do you calculate sales tax?

I'm trying to stay on a budget for the first time since I got my first job and I don't want to spend more than \$25 on my next trip to Walmart. So I want to calculate every penny before I walk into the store.

I got my list and the exact prices of my items. My problem is calculating my final price with the sales tax.
My first question is do they tax the non-food items separately? For example (I'll use my previous receipt):

Non-Food Items
Lotion (\$3.97) + Lotion (\$3.97) + Stylus Pen (.94) + Earphones (7.00)= \$15.88 + (.0825 × 15.88= 1.31) \$1.31= \$17.19
Food
Honey (\$2.98) + Spinach (\$2.46) + Gum (\$2.24)= \$7.68
Total: \$7.68 + \$17.19= \$24.87

But here's where I get really confused... they taxed me.84 cents, 8.250% of my subtotal which was \$23.56, (what is says on receipt) making my total \$24.40!!! Where did the.84 cents come from?

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• I'm confused about what you are doing. Are you showing two different sales? Like the list of food and non-food items different than the last paragraph?

If those are two different things, maybe the "subtotal" is your total purchase of both taxable and non-taxable.
Taxable purchase = 10.18
Non-Taxable = 13.38
Total purchased: 23.56
Tax on 10.18 = 10.18 * 0.0825 = 0.84
Total with Tax = 24.40

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