Yes, you can pay under your social security number, if you're not using and EIN - Employer Identification Number.
Here's a good resource for how to make the payments. When you get to the IRS payment website, and select the payment method, you'll choose tax year 2024, form 1040, and estimated payment. You'll then authenticate your identity and make the payment. Be sure to save a copy of your confirmation for reference.
Hope this helps!
Cindy
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