@anaa-7 wrote:
Please tell me if I can just pay the capital gains tax by 4-15-19 due to my income tax with holdings being the same as last years?
Yes, you can avoid the penalty for underpayment of estimated tax if you owe less than $1,000 in tax for 2019, or if you pay at least 90% of the tax owed for 2019 or 100% of the tax shown on your return for 2018, whichever is smaller.
See https://www.irs.gov/businesses/small-businesses-self-employed/estimated-taxes
