@hughbarrett2006 wrote:
Question: Can I stop paying estimated taxes without facing a penalty?
You can avoid the underpayment of estimated tax penalty if:
1) You owe less than $1,000 in tax, after subtracting any withholding and refundable credits, OR
2) You paid withholding and estimated tax of at least 90% of the tax for the current year or 100% (this can increase to 110% based on adjusted gross income) of the tax shown on your return for the prior year, whichever is smaller.
See https://www.irs.gov/taxtopics/tc306
