Sri Lanka: the highest assumptions here, and the widest gap between them
EPF and ETF provide part of retirement income and are not modelled here. Contributions to both are compulsory for private-sector employees, so if you include them in the contribution figure on this page, do not also count their eventual balance as reducing your income target.
Sri Lanka carries the highest assumptions on the site: an 11% nominal return against 6% inflation. That works out at a real return of 4.72% a year, (1.11 ÷ 1.06) − 1, which is a little above most of the site and a little below Sweden's, but the headline balances the chart shows are close to meaningless read on their own. Over 30 years, 6% inflation divides a balance by 5.74, so a projected LKR 100 million is about LKR 17.4 million in today's money.
Read the lower line. It is the only one that answers the question you are asking, and in a high-inflation currency the difference between the two is not a detail but most of the number.
The minimum retirement age for private-sector employees was raised to 60 in 2021, which is where the retirement age on this page opens.