While the fertility transition in Nepal started in the 1980s, the decline was rather modest until the
early 1990s. Nepal witnessed a sustained decline in fertility, falling from 5.1 children per woman in
1991 to 4.6 in 1996 and 4.1 in 2001, with a further drop to 3.1 in 2006 and 2.6 in 2011. Reduction of
fertility by half in two decades (from 5.1 in 1991 to 2.6 in 2011) and by one child per woman in five
years (4.1 in 2001 to 3.1 in 2006) is a remarkable achievement. Fertility in urban areas has reached an
ultra-low level of 1.6 as compared with 2.8 in rural areas. Women completing School Leaving
Certificates have also experienced ultra-low fertility of 1.7. This paper examines fertility levels, trends
and differentials. It also employs a decomposition analysis technique to determine the components of
changes in total fertility rate (TFR) due to marital structure and marital fertility, covering the intersurvey
periods, 1991-1996, 1996-2001, 2001-2006 and 2006-2011. Results show that during the
period of 1991-1996, marital structure contributed to the rise in fertility, which was more than
counterbalanced by the negative influence of the decline in marital fertility. In the later periods, while
changes in marital structure began to play some role in the fertility decline, the contribution of marital
fertility was still more pronounced. Rise in contraceptive use has been the primary reason for fertility
decline. Age at marriage has begun to rise slowly. However, most recently, contraceptive use has not
increased to explain the continuous fall in fertility. Factors such as an increase in male migration and
induced abortion have been suggested as causes of the continued decline in fertility