Hi @hbwilliams22,
Here’s some thoughts on your question. I’m not a tax accountant, but I’ve had the same issue.
The simple way would be to create 1 Estimated Tax Payment expense category. Or you could create two, one for Federal Tax Payments one for State Tax Payments. Since these expenses require cost outlays like food and gas, you probably want to budget for them and include them in your reports.
But, these estimated tax payments are not like ordinary expenses in some ways. You owe a certain amount in taxes, which is a liability. When you make the estimated tax payment, you are really reducing your tax liability.
You could create additional Liability Accounts for Federal and State taxes payable. Tiller would not be able to automatically adjust these accounts, but you could manually make adjustments to them.
This would give you the ability to know if you were ahead or behind in your expected tax payments. But it might be more complicated to set up than the added value it brings.