Estimate your quarterly taxes
Your income
Business expenses
Logged separately from income — these lower your taxable income, same as Schedule C deductions would.
Quarterly deadline reminders
Saved locally on this device only. Sending an actual email requires connecting an email provider, which this local build doesn't have wired up — so nothing is sent yet, this just keeps your preferences and shows you the computed reminder dates.
Federal + optional flat-rate state approximation. TaxStash never requires bank access and never files on your behalf. See the notice above — these numbers are estimates, not guarantees.