The first Rs 100 note featuring Mahatma Gandhi was printed in 1949, post-independence. Since then, it has been printed in various designs, sizes, and colours. The RBI has revised the currency notes from time to time due to counterfeiting and developmental reasons.
The blue and green colour tone design of the 1970s was popular. The 1980s saw changes in size and design. The Mahatma Gandhi series began in 1996. In 2005, the note was revised with new anti-counterfeiting technology. The 2018 Mahatma Gandhi series Rs 100 note features a violet colour, watermark, and the 'Rani Ki Vav' in Agra.