Tim Fairhall is appealing to MPs in parliament for access to have his KiwiSaver funds before the age of 65.

A 39-year-old man with Down syndrome who wants access to his KiwiSaver funds early has taken his fight to Parliament.

Tim Fairhall spoke to MPs in Parliament on Wednesday - appealing to have access to his KiwiSaver funds before the age of 65 so he could travel overseas to see his brother and best friend while he was still in good health.

Having Down syndrome means Fairhall is ageing faster than most people.

In a TVNZ video, Fairhall said he would not live as long as most people but "it doesn't matter how long you live as long as you make the most of your life".

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"I have done lots of cool things in my life so far and I want to do more," Fairhall said on Wednesday.

It was Fairhall's goal to see his brother in Italy and his best friend in Canada, he said.

"I have saved my money to do that."

KRIS DANDO/STUFF Commerce Minister Kris Faafoi says legislation could be changed when a review of retirement income policies was carried out.

Fairhall's mother, Joan, told TVNZ they wanted change in the law to allow him early access.

"We want it as soon as possible please so that Tim and other people like him can actually enjoy the money that they saved," Fairhall said.

According to the NZ Herald, Fairhall's mother enrolled him in KiwiSaver 10 years ago, thinking she was helping him save for his retirement, which she said would be in his 40s.

"This is Tim's money, he earned it, he saved it. He saved it with a particular goal in mind. It's important that he has a goal to look forward to. Tim is very hung up on that," Fairhall said.

Committee member, National MP David Carter, told the NZ Herald the committee would talk to officials to see if a solution could be found.

"Rest assured, we've got your message loud and clear," he said.

On Wednesday, Commerce Minister Kris Faafoi told TVNZ legislation did not allow Fairhall to get "that flexibility" of accessing his KiwiSaver funds before age 65.

Faafoi wanted time for officials to look at the wider issues around KiwiSaver so they would be waiting for next year when the retirement settings would be reviewed, TVNZ said.

This was the best option as any amendments would likely require a law change, Faafoi said.

Faafoi did not think giving Fairhall access to his KiwiSaver funds early was "the right thing to do, though we obviously have sympathy for Tim and his situation," he said.

Blair Vernon, managing director of Fairhall's provider AMP, told NZ Herald there needed to be "a mechanism for recourse in some situations that could be considered on a case-by-case basis".

Buying a home for the first time, proving financial hardship, moving overseas permanently or being diagnosed with a serious illness were all considered accepted reasons to opt out of KiwiSaver before 65.