The couple - who welcomed their second son Elijah in December, and also have a two-year-old son Zachary - have insisted they don't want to have any more children.
David told EOnline.com: ''We're done. That I can confirm. No more. We're complete. I got my tubes tied.''
The 50-year-old filmmaker said the six-week-old tot is settling into their family well but admitted that Zachary is a little jealous of their new addition.
He said: ''He's protective and concerned. If Elijah is crying a lot, he'll say, 'Is baby Elijah OK?' He likes to hold him and he likes to cuddle him. But he's also a little jealous if [Elijah] gets too much attention. So we're sharing the love a lot, which is good because we all need to learn to share more love.
''Elijah's great! He's gorgeous. He smiled this morning. There's that thing where they're out of the womb but then they really wake up. He's so engaged in people now. He's a really happy little guy.''
David and Elton, who are hosting their annual Oscars viewing and after parties tomorrow night (24.02.13), are also currently in the process of planning two weddings.
The couple entered into a civil partnership in 2005 but after gay marriage was legalised in the UK they have decided to tie the knot there and again in Los Angeles when the US city follows suit.
David recently said: ''Los Angeles is like a second home to us. We have a civil partnership, but gay marriage has now been legalised in the UK.
''When we go back to Britain, we will definitely renew our vows under the gay marriage act but to do it here in Los Angeles, which is a second home to us, we'd love to do it here too!''
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