neo.tax - automated R&D tax credits for startups = extra month of burn
Harpoon Revenue Goal Calculator - Freelancers, how much money do you need to make?
Stripe Atlas Taxes - Help file your business taxes
Startup Return Calculator - How much money can your startup investment make you?
1099 Tax Forms by Payable - Automatically generate tax forms for contractors
Mobile App Revenue Calculator - Estimate your app revenue from ads and in-app purchases