text: i am starting a landscaping business.i do know about paying state taxes, but i do not know about paying federa   for both state and federal, you'll need to pay estimated taxes (paying taxes ahead of april 15th). here's a link to the irs site on estimated taxes: http://www.irs.gov/publications/p505/ch02.html  depending on how you are set up as a business, you might be using schedule c from the 1040. and you will probably have to pay a self-employment tax.  other things you may have to pay for are net profits depending on if the business is incorporated (if at all) in a city's boundaries, business licenses, etc.  but first decide if you are going to incorporate and if you are employing others. the easiest is to just be a sole-proprietor. however, you don't have legal protection (if someone sues you) until you incorporate.  the easiest and simplest form of corporation is the limited liability company (llc). further, a single-member llc is even simpler in that you only get taxed once -- you don't have certain corporation taxes. basically, it's almost just setting up legal-protection by filling out a few forms. otherwise, you just fill out schedule c and you're set.  here's a link to the irs's tips on starting a business. http://www.irs.gov/businesses/small/article/0,,id=110417,00.html  this is just a brief overview and certainly just tips (and not proof for the irs if they audit you). best to seek out a small business advisor or read up on the irs website.  good luck.