Tim Cahill is an Australian former professional footballer who has a net worth of $20 million. Considered one of the greatest Australian footballers in history, Tim Cahill scored 50 goals in 108 caps for the Australia national team and had successful seasons with the clubs Millwall, Everton, the New York Red Bulls, and Melbourne City. Among his numerous career achievements, he became the first Australian to score in a FIFA World Cup and an AFC Asian Cup.

Tim Cahill earned an estimated $50 million in salary during his professional soccer career, with additional income coming from endorsements, appearances, licensing deals, and business ventures.

Cahill spent his first six professional seasons with Millwall. His salaries during that period were not publicly disclosed, but they would have been relatively modest compared with the contracts he later signed in the Premier League, Major League Soccer, China, and Australia.

When Cahill joined Everton in 2004, he signed a four-year contract reportedly paying £15,000 per week, equal to approximately £780,000 per season. After becoming Everton's leading scorer and Player of the Year during his debut campaign, the club offered to increase his salary to roughly £23,000 per week. Cahill rejected that proposal and ultimately signed a new five-year agreement reportedly worth £27,000 per week, or approximately £1.4 million annually.

Cahill signed another five-year extension in 2007 and agreed to a new four-year contract in 2010 that could have kept him at Everton through 2014. The financial terms were not officially released, but by his final seasons, his salary was reported to be approximately £2.9 million per year, equal to around £56,000 per week. Over eight seasons at Everton, Cahill likely earned between £14 million and £17 million before taxes and agent fees.

In July 2012, Cahill joined the New York Red Bulls as a Designated Player. The MLS Players Union listed his base salary at $3.5 million and his guaranteed annual compensation at $3.625 million. He remained at that level in 2013 and 2014, making him one of the highest-paid players in Major League Soccer. Cahill likely earned approximately $9 million to $11 million during his two-and-a-half seasons in New York.

Cahill signed with Shanghai Shenhua in February 2015. Reports about his Chinese salary varied significantly, ranging from approximately $3 million to as much as AUD $10 million per season. Australian financial publications later described the agreement as the most lucrative contract of his career and valued it at no less than AUD $8 million annually. Cahill remained with Shanghai for approximately one year and had recently signed an extension when the club terminated his contract in February 2016.

He subsequently signed a six-month contract with Hangzhou Greentown. The salary was not disclosed, although he reportedly rejected an extension that could have kept him in China through 2018.

Cahill returned to Australia in August 2016 through a heavily promoted agreement with Melbourne City. The contract covered two playing seasons followed by a potential coaching role. Reports initially valued the arrangement at as much as AUD $4 million per season, although a more detailed account placed the combined playing package at approximately AUD $4 million, potentially rising to AUD $4.5 million or $5 million with bonuses. The A-League was permitted to contribute as much as AUD $1 million under a special guest-player rule. Cahill left Melbourne City after approximately 16 months, so he may not have collected the full amount originally contemplated by the deal.

His final contracts, with Millwall and Indian Super League club Jamshedpur, were not publicly disclosed and were likely substantially smaller than his peak earnings.

In addition to his club salaries, Cahill earned money from sponsorships and endorsements with companies including Weet-Bix, Australia Post, EA Sports, and several financial, apparel, and automotive brands. He also appeared on the Australian cover of multiple editions of the "FIFA" video game series and developed soccer academies, clothing ventures, and other investments.

Tim Cahill was born on December 6, 1979 in Sydney, Australia to Tim Sr., who is of English and Irish descent, and Sisifo, who is of Samoan ancestry. He has two older siblings named Sean and Dorothy and a younger sibling named Chris. Growing up, Cahill played both football and rugby, and from the age of seven took private lessons under John Doyle. The family moved around a lot due to financial instability, bringing Cahill to many different places. He played for such junior clubs as Balmain Police Tigers, Marrickville Red Devil, and Lakemba, and attended such schools as Bexley North Public School, Annandale North Public School, Tempe High School, and Kingsgrove North High School.

In 1995, Cahill joined the youth side of the club Sydney Olympic. After some time with the club, he was released when he failed to pass the annual trial. Dispirited, Cahill began training at the New South Wales Institute of Sport to improve his physical prowess. He also joined the club Belmore Hercules, becoming its youngest-ever player. Following a successful season with Belmore Hercules, during which he scored 30 goals, Cahill joined the under-21 team of Sydney United. In March of 1997, he made his senior debut for Sydney United as a substitute in a 0-0 draw with St George.

In late 1997, Cahill moved to England to pursue his football career. His trip was funded by a loan that nearly left his family bankrupt. Cahill went on to sign with Millwall, making his debut for the club in the spring of 1998. He had his breakout season in 2000-01, when he helped Millwall win the Football League Second Division with a club record of 93 points. Later, Cahill played a critical role in the club's 2004 FA Cup campaign, leading Millwall to its first FA Cup final. In his sevens seasons with the club, he scored 56 goals in 249 total appearances.

Cahill was transferred to the Premier League club Everton prior to the 2004-05 season. He was an immediate success in his first season, becoming Everton's top goalscorer with 11 league goals and earning Everton Player of the Season honors. In 2006, Cahill became the first Everton player in 18 years to be nominated for the Ballon d'Or. However, he missed a good deal of his second season with the club due to injury. Cahill returned during the 2007-08 season and made his 100th league appearance for Everton. He scored his 100th career goal in early 2009 and made his 200th appearance for Everton in 2010. Cahill's final years with the club were not so great, as he went the entirety of 2011 without a goal and was ejected from the field in 2012 for violent conduct in a game against Newcastle United. In eight seasons with Everton, he scored 68 goals in 278 total appearances.

In the summer of 2012, Cahill signed with the MLS's New York Red Bulls. He had his best season with the club in 2013, when he scored 12 total goals and won the Supporters' Shield for the best record in the regular season. Additionally, on October 20, 2013, Cahill set a new record for the all-time fastest MLS goal, which he scored just eight seconds into an eventual 3-0 win over the Houston Dynamo. He left New York in 2015 having scored 16 goals in 72 total appearances.

After leaving New York, Cahill signed with the Chinese Super League club Shanghai Shenhua. He played one season with the club, in 2015, and reached the Chinese FA Cup final. In 2016, Cahill moved to a different Chinese Super League club, Hangzhou Greentown. However, he appeared in just 17 games for the club before leaving for Australia.

On August 11, 2016, Cahill signed a three-year contract with the A-League club Melbourne City. In his first season with the club, he scored 13 goals in 26 total appearances and led Melbourne City to victory with the only goal in the FFA Cup final. The FFA Cup became the first title ever won by the club. Cahill had a much less successful second season, appearing in just seven games. Moreover, he got into trouble when he used abusive language against a match official, resulting in his ejection before he even entered the field. At the end of 2017, Cahill left Melbourne City.

Cahill returned to his first professional club, Millwall, in early 2018. He played in ten games with the club to close out the season and was subsequently released.

In September of 2018, Cahill signed with the Indian Super League club Jamshedpur. He played in 12 games with the club, scoring two goals, before his season ended prematurely due to a finger injury in early 2019. Cahill announced his retirement from football the following month.

Cahill represented Western Samoa on the international football stage before representing Australia, making his debut with Western Samoa's under-20 team in 1994. He made his debut for the Australia national team a decade later, and participated in both the 2004 Summer Olympics and the OFC Nations Cup. Australia won the latter, earning the nation its first FIFA World Cup qualification in more than three decades. In the 2006 FIFA World Cup, Cahill became the first Australian player ever to score a World Cup goal. The next year, he became the first Australian to score in an AFC Asian Cup. Cahill returned to the FIFA World Cup in 2010 and scored one goal. In 2014, he scored in his third FIFA World Cup. Cahill appeared in one more FIFA World Cup, in 2018, but failed to score in his sole appearance in the tournament. After that, he announced his retirement from international football as the top goalscorer in the history of the Australia national team, with 50 goals.

In 2010, Cahill wed his childhood sweetheart Rebekah Greenfield. They have a daughter named Sienna and three sons named Kyah, Shae, and Cruz. Both Kyah and Shae followed in their father's footsteps to become footballers, with the latter playing professionally for the Premier League club Nottingham Forest.