What is a good method or formula for calculating the estimated taxes to deposit each quarter, since the income varies so much? The 1040Es indicates about $6000; however, it should be nearer $9000.
Last quarter I used a formula I found on the IRS site, but it is not exactly aimed at this specific business type. Then I calculated by best mathematical estimate, and decided an an amount not below what would be needed.
Is there a better method for me to use?
