When am I required to make estimated payments?

I currently have a taxable brokerage account bringing in about $15,000 a year off dividends. My math says federal long term would be $2,250 for federal taxes and about $650 for state. Should I make estimated payments to my state and IRS? What happens if I don’t and just pay when I file my taxes? If I anticipate this being my rough tax liability for the entire year can I just do an estimated payment at the beginning of the year for this amount?