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My husband and I normally do get a pretty hefty refund every year so taking $180 out of it would not be a big hit. With just starting this Etsy shop and not knowing what my profit will actually be, I want to be cautious and aware of doing everything by the books. I don't want to be surprised come tax season next year because I wasn't making the required estimated payments and take a hit on our usual refund that we have become accustomed to.
You said that making estimated tax payments on such a small profit is not required. At what point does the profit become substantial enough to require quarterly estimated payments?