The 1998 Chase Championships was a women's tennis tournament played on indoor carpet courts at Madison Square Garden in New York City, New York in the United States. It was the 27th edition of the year-end singles championships, the 23rd edition of the year-end doubles championships, and was part of the 1998 WTA Tour. The tournament was held from November 16 through November 22, 1998. Martina Hingis won the singles title and earned $500,000 first-prize money. It was the last edition of the tournament to be played in the best-of-five-set format for the final which it had used since 1984.

Finals

Singles

Martina Hingis defeated 🇺🇸 Lindsay Davenport, 7–5, 6–4, 4–6, 6–2.

Doubles

🇺🇸 Lindsay Davenport / 🇧🇾 Natasha Zvereva defeated 🇫🇷 Alexandra Fusai / 🇫🇷 Nathalie Tauziat, 6–7, 7–5, 6–3.