T-ara's later material was released to varying degrees of success before the group began focusing on promotional activities in China, where they attracted attention for their cover of Chopstick Brothers' "Little Apple" (2014).

Soyeon, a former trainee of SM Entertainment who was supposed to be a main vocalist and the leader of Girls' Generation,[17] and Qri, a famous top Ulzzang at the time, were added to T-ara three weeks prior to debut.

[20] In September 2009, Eunjung, Soyeon, Hyomin and Jiyeon collaborated with labelmates Kwangsu, Jihyuk, and Geonil of Supernova for the single "TTL (Time to Love)".

In June 2010, the group donated all the proceeds of the World Cup merchandise sold on their online clothing shop T-ara Dot Com to a charity for African children.

[38] T-ara held their first comeback performance through Music Bank on December 3 and began promotions with their new seventh member, Hwayoung, and new leader, Boram, and received two consecutive wins for "Wae Ireoni" and "Yayaya" on M Countdown.

[65][66][67] On July 30, Core Contents Media announced Hwayoung's departure after 1 year and 8 months, citing staff complaints and denying the bullying rumors.

[79][80] In September 2012, T-ara was offered ₩10 billion in funding for an Asia tour including China, Hong Kong, Indonesia, Vietnam, Thailand, Singapore and Malaysia.

To promote the single, the group held special showcases in 10 Japanese cities, starting on February 20, 2013, at the Sapporo Factory Atrium and ending on March 9, 2013, at the Seagull Square in Nagasaki.

On July 10, 2013, it was confirmed with a video released by Core Contents Media that Areum would be leaving the group to pursue a solo career "towards the beginning of next year".

[98] On 19 February CCM released a music video for a promotional track from Cho Young Soo's All Star Project with the single titled as "First Love" sung by Hyomin, Jiyeon and Soyeon featuring rapper EB.

On February 7, 2015, T-ara's Eunjung and Soyeon and labelmastes Cho Seunghee, Minkyung (The SeeYa), Ki-O, Jongkook and Sejun (SPEED) released a special winter single named "TS" with the track "Don't Forget Me".

On October 15, the website "Insider Monkey" published a list of 16 best selling girl groups of all time where T-ara was placed 10th with a total of 36.18 million sales recorded.

[114] As of 2016, the Dong-a Ilbo newspaper has published many items on the Korean idol stars who have had influence in the last 20 years based on a poll of 2,000 people in Korea.

[116] On September 17, T-ara held their last Concert for their Great China Tour at the Mercedes-Benz Arena in Shanghai with around 12,000 people attending, the highest figure for any South Korean girl group to date.

[11] On May 7, MBK Entertainment revealed the group's plans had changed, and that the final album had been rescheduled to release in June 2017, with members Boram and Soyeon not being able to partake due to the expiry of their contracts.

The group performed "Kaze no Yō ni", along with Boram and Qri's "Shabontama no Yukue" (シャボン玉のゆくえ) and Soyeon's "Love Poem" from their "Bunny Style!"

[167] In 2021, Aedan Juvat of Pop Wrapped referred to the group as "The second-generation K-pop legends" and credited them for offering "some of the catchiest dance tracks in a decade".

Over 100 media outlets have applied to cover the press conference .The company estimated that the group would bring over 16 billion KRW (~US$15.4 million) in yearly profit.

[citation needed] T-ara has also appeared as in several tourist-guides and brochures promoting the Korean culture for foreign tourists including on Mapple Magazine (Japan).

In July 2021, girl group Rocket Punch's members Yeonhee and Yunkyung cited T-ara as their role-models who inspired them to become idols after watching their performances in their hometown Gwangju.

A few days before debut, T-ara's agency CCM revealed that the group received a total of seven CF offers including from beverages, clothing, telecommunication, and teen cosmetics brands.

[195][196] In early 2015, T-ara reportedly signed a US$1 million contract with Celucasn, a Chinese popular clothing brand with images and a short promotional video also having already been released.

Qri and Boram represented the group by attending the appointment ceremony on August 31 where they received a plaque of appreciation from Gyeonggi Province governor Choi Chan-heung.

In June 2010, Core Contents Media revealed that all proceeds from all of T-ara's World Cup-related products will be donated in support of catering establishments in undeveloped areas of Africa.

[205] On March 11, 2012, T-ara announced through their company's representative that they donated all their profits from their latest Japanese single Roly Poly to the victims of the Fukushima nuclear power plant accident.

Hyomin, Qri and Boram personally delivered the donation to "Dongducheon Angel" Headquarters and held an additional fan-sign event to celebrate the Chuseok holiday.

[65][66][67] On July 30, Core Contents Media announced Hwayoung's departure after 1 year and 8 months, citing staff complaints and denying the bullying rumors.

[217] On April 13, 2012, T-ara was supposed to hold a concert in the United States with Davichi and Yangpa, titled "Power & Beauty in San Francisco" with around 8,000 tickets already sold.

The event organizer, Namu Entertainment later sued Core Contents Media, blaming the agency for not taking precautions and not preparing visas in time.

[219][220] In 2013, the Seoul District prosecutor's office charged a 39 year old male for fraudulently taking advantage of T-ara's image on Smart Phone applications and obtain ₩110 million.