All Blacks half-back Aaron Smith has committed to New Zealand Rugby (NZR) until the 2023 World Cup in France after signing a new contract.

NZR confirmed on Tuesday that the 32-year-old, who has 97 caps for the All Blacks, had penned a new deal securing his future with Super Rugby side Highlanders and provincially with Manawatu.

Palmerston North-born Smith is New Zealand's most capped half-back and remains a key member of the All Blacks side who finished third at the 2019 World Cup.

"One thing that hasn't changed is my love for the Highlanders, the All Blacks and Manawatu," Smith said.

"The decision to stay is based on a number of things, but I'm very keen to see the Highlanders do well, we have a good environment here and some great, young players, so I think the next few years will be exciting for us and it'll be great to be part of it.

"Dunedin has been good to me. My wife Teagan and I have a home and a business here and our son Luka was born here. 

"I felt that committing to the Highlanders for another few years in some small way says thanks for all the support we have enjoyed over the years."

All Blacks coach Ian Foster added that Smith's influence on the side could not be underestimated.

"He is so instrumental in the way we play the game and is such a vital cog for us, both on and off the field, so this is fantastic news," Foster said. 

"We're delighted that Aaron, Teagan and his family have decided to commit to New Zealand and congratulate them on the decision."

It is anticipated Smith will bring up his 100th New Zealand cap this year, while he is two caps away from equalling the record for most appearances for the Highlanders.