"It really took a weight off my shoulders, I had my eggs in a few baskets but sometimes you have to turn down the good to get the best," he said.
"I have always been interested in the sciences so studying medicine seemed like a natural progression for me. I am looking forward to being able to continue studying what I want to, next year."
Fintan, who plans to do a law and bachelor of management conjoint degree, said he was excited when he found out his application was successful.
"There are not many scholarships that award such a large amount of money so I was stoked when I found out I was one of the lucky few to be awarded it."
Fintan was also one of 10 students awarded a $40,000 University of Waikato scholarship, along with Samantha.
He said he spent a lot of time "soul searching" before deciding to accept the Auckland one.
"I had a big list of pros and cons for each scholarship and it was a really hard decision but in the end I knew both would provide an amazing opportunity and I just had to decide."
Fintan said the scholarship "lifted a burden felt by many students going on to tertiary study".
Samantha said she was "relieved" to hear she had won the scholarship.
"Winning the scholarship meant I could finally make the decision to go to Auckland as Waikato was still on the table until I knew about the Auckland scholarship. The indecision had been bugging me for a while."
She hopes to complete a conjoint degree studying law and arts.