[12][13] On 29 July 2018, Bashundhara Kings officially started their player transfer formalities for upcoming 2018–19 season as they inked the contract papers with forward Tawhidul Alam Sabuz, defender Nurul Nayeem Faisal and midfielder Mohammad Ibrahim during the signing ceremony.

On 29 October 2018, The Kings started their 2018 Bangladesh Federation Cup journey as they beat falling giant Dhaka Mohammedan 5–2, thanks largely down to Colindres' brilliant performance.

[21] In the semifinal, Tawhidul Alam Sabuz came on from the bench in the 70th minute, scoring the winning goal in the extra time to make it 1–0 against Sheikh Russel KC and carried the Kings to the final.

[24] On 14 December 2018, Goalkeeper Anisur Rahman Zico's heroic performance in shootout after Costa Rican Daniel Colindres' shining display helped Kings edge a spirited Rahmatganj MFS 3–2 in tiebreak in the fourth quarterfinal of the tournament.

[25] On 20 December 2018, Another heroic performance by goalkeeper Anisur Rahman Zico propelled Bashundhara Kings to the Independence Cup final with a 7–6 win on penalties over Dhaka Abahani.

[26] On 26 December 2018, Bashundhara Kings laid their hands on their first silverware in top-flight football with a 2–1 win against former champions Sheikh Russel KC in an entertaining final of the Walton Independence Cup, thanks to an extra-time goal from substitute forward Motin Mia after Marcos Vinicius's early strike was cancelled out by Sheikh Russel's Raphael Odovin in the stoppage time of the first half.

[29] On 23 January 2019, Bashundhara Kings made a dream debut in their home ground Sheikh Kamal Stadium as they beat defending champions Dhaka Abahani by 3–0 margin.

[30] On 29 April 2019, it was confirmed that Trinidadian forward Willis Plaza is set to join the club on a loan move from Churchill Brothers S.C. for the second leg of Bangladesh Football Premier League.

[31] On 7 July 2019, Bashundhara Kings beat Team BJMC 2–0 at Sheikh Kamal Stadium in Nilphamari on Sunday afternoon to further bolster their position at the top of the BPL table.

[33] On 3 August 2019, Bashundhara Kings concluded their memorable debut season in the Bangladesh Premier League with a 1–1 draw against Chittagong Abahani Limited.

[36] On 11 March 2020, Argentine striker Hernan Barcos made a remarkable debut in Bangladesh with a sensational quadruple as Bashundhara Kings kicked off their maiden 2020 AFC Cup campaign from Group E with a dominating 5–1 win over TC Sports Club.

Barcos, who featured for Argentina four times, headed his first two goals within half an hour before netting two more after the break, while skipper Daniel Colindres added the other to record Bashundhara's biggest win of the season.

[37][38] On 17 May 2020, The BFF executive committee, following an emergency meeting, declared the 12th edition of the league abandoned, scrapping promotion and relegation while canceling the Independence Cup from the calendar as a precaution to combat the spread of coronavirus in the country.

[40] On 5 August 2020, Bashundhara Kings announced their new signing Robson Robinho for the AFC Cup and forthcoming football season as the Brazilian winger is all set to join the Bangladesh side on loan from Fluminense FC for a year.

[43] On 19 September 2020, Kings sealed an agreement with Iranian defender Khaled Shafiei as the club's fourth and last foreign recruit for the 2020–21 season.

[45] On 22 December 2020, Bashundhara Kings kicked off the domestic season with a comfortable 3–0 win over Rahmatganj MFS in the inaugural game of 2020–21 Federation Cup.

[46] On 10 January 2021, Kings retained the title of Federation Cup for successive time as they beat Saif Sporting Club by 1–0 margin in the 32nd edition final.