"I have a big desire to still represent my country. But I respect the fact that giving back my national contract will affect my chances of selection. But ultimately this decision has been about my family and putting them first and I feel like this is the right time to do that.
"Playing cricket for my country was a childhood dream and I'm so proud of everything I've been able to achieve with the Black Caps over the past 12 years."
NZC chief executive David White said the left-armer had made it clear during discussions that his appetite for touring had diminished, and that he wished to spend more time with his family.
"He's been completely honest and up-front with us about his reasoning and, while we're sad to be losing him as a fully-contracted player, he leaves with our best wishes and our sincere thanks.
"Trent's made a massive contribution to the Black Caps since his Test debut in late 2011 and is now considered one of the best multi-format cricketers in the world. We're very proud of what he's achieved."
White said he was confident Boult understood what the decision meant in terms of his international playing future.
"We've had several conversations and I know Trent understands that, in terms of selection, NZC will continue to make a priority of those players with either central or domestic contracts."
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