How much money back if I made 26,000 and have 3 children

If you'd like more than a guestimate from us why don't you go online on TurboTax and use their services FREE using what deductions were already taken out of your pay and figuring out your child tax credit. Also if you are able to take the earned income credit. There are so many variables here that you need to do it yourself online for free. You don't have to formally file the return to figure out what you'll get back. It will take you less than 1/2 hour to find out exactly what you'll get back.