How to Develop the Best SEO Marketing Budget It depends, of course. If you’re just now, in 2017, starting to think about SEO for the first time, this probably isn’t the right blog for you. Check out this Beginner’s Guide to SEO from Moz. For those trying to figure out how much to spend on SEO, you’re in the right place. When it comes to SEO spending and budgeting, be sure to have an ultimate goal in mind and a desired return on that investment (ROI) right from the start.