Lahiri figured out how to play golf at eight years old from his dad, Dr. Tushar Lahiri, a military doctor who also enjoyed playing golf. Lahiri joined the Asia Tour in 2008. He won his first victory in 2011. Panasonic Open and his second win in 2012 SAIL-SBI Open. His best result in the Order of Merit came in 2014 with his first overseas Asian Tour win, the CIMB Niaga Indonesia Masters, which he later followed up with another at the Venetian Macau Open. In 2013, he was placed 3rd in the Order of Merit.
Lahiri entered the top 100 of the Official World Golf Rankings for the first time in March 2014 after a solid season with two wins on the Asia Tour.
Lahiri also had great success in the Professional Golf Tour of India , where he won eleven events in 2009 and was awarded the Order of Merit.
The big break for him came when he qualified his girlfriend. a major tournament in the 2012 Open Championship at Royal Lytham & St Annes Golf Club in Lancashire. He made it a very memorable outing, first cutting (68-72) and then hole-in-one on the 9th par-3 hole in the third round en route to a T31 finish.
In February 2015, Lahiri scored his first official Tour of Europe win at the Maybank Malaysian Open, defeating Bernd Wiesberger. In the third round, he hit a 10-under-par 62 during the third round to set up for the final day, and four shots behind him outweighed one hit. Later that month, Lahiri won his second leg of the European Tour in his home country of India, the Hero of the Indian Open.
Career towards world ranking
He fell behind seven strokes in the final round to take the playoff with Shiv Chowrazia, which he won with a birdie on the first extra hole. Two victories propelled Lahiri into the top 50 of the Official World Golf Rankings, qualifying him for a tournament of Masters 2015.
He is the third Indian citizen to play in the Masters.  after Jiva Milha Singh and Arjun Atwal.  He made a cut on his first appearance and finished the tournament 71-75-74-72 in his four rounds, leaving him in 49th place. Jason Duffner. 
In the August 2015 PGA Championship which took place in Whistling Straits, Lahiri posted rounds 70-67-70-68 with a score of -13. Despite the ghost on the 72nd hole, Lahiri finished fifth in the tournament and set a new record for the best finish by an Indian professional golfer in a major.  Sunday’s top five capped off an unforgettable week in Wisconsin for Lahiri, placing him 38th in the world golf rankings.
He also won the PGA of American Tuesday, during the pre-tournament long drive competition, running 327 yards, he won the traditional gold money clip and a $25,000 charitable donation in his name. His performance set many records for an Indian golfer; he became the first Indian to score under par in all four rounds of a major, his 13-under record was the best by an Indian at any major, and his five-under 67 in the second round was also the best tour by an Indian at any major.
Lahiri was named to the 2015 Presidents Cup team, the first player from India to receive this honor. Lahiri attempted to qualify for the PGA Tour via the 2015 Web.com Tour Finals after earning enough non-member points to qualify. He was the highest-ranked player in the final, 40th at the start of the four-event tournament.
Lahiri only played in the first two tournaments but earned enough for the PGA Tour card. He made it into the top 10 of the 2016 PGA Tour seasons, finishing first in the T-6 rankings. Dean and DeLuca Invitational.
Lahiri also qualified for the 2016 Summer Olympics, earning a spot on the 60-player course to compete at the Olympic Golf Course in Rio de Janeiro. He also led for the first time after 54 holes on the PGA Tour during the 2017 CIMB Classic in a T-3 revision. He achieved his best PGA Tour finish in T-2 in 2017.
Memorial Tournament. Lahiri was named again in 2017. Presidents Cup Team. Lahiri finished the 2017 PGA Tour season ranked 51st in the FedEx Cup standings. In the 2018 PGA Tour season, Lahiri hit his lowest round on the PGA Tour with 61 points. War Tribute at the Greenbrier.
His best finish was T-5 for the CJ Cup in the 2018 PGA Tour season. Anirban struggled in the 2019 season and ultimately lost his PGA Tour card, finishing outside the top 125 of the FedEx Cup. He received his PGA Tour card for the 2020 season at the Corn Ferry Tour Finals, finishing 10th overall.
His Net Worth:
Anirban Lahiri has made a total of $6,017,546 in his career, according to Surprise Sports. Lahiri’s earnings dropped from Rs 11.99 crore in 2018 to Rs 5.3 crore in 2019, according to Forbes India Celebrity 100 2019. His main source of income is professional golf. He has endorsements with many national and international brands.