LAST WEEK, the interest rate on Public Provident Fund (PPF), and a number of other deposit schemes run by the government (Kisan Vikas Patra, the girl child scheme, senior citizens deposit etc) were cut by 0.1% per annum. PPF went down from 8.1 to 8.0%. There were some protesting noises on social media and from some of the usual suspects, but they were mostly just murmurs, probably because of the marginal quantum of the cuts. In fact, a lot of people wondered what was the point of such a small cut. This shows that the idea that these rates are now market-linked is not widely known. They are reset every quarter, depending on the interest yield on government securities. Give how things are going, it won’t be too surprising if these rates fall further. PPF rates are already at a historic low and if they go below 8% then the psychological impact of hearing 7-point-something will be huge on savers. The KVP is already down to 7.7%. It’s also worth noting that there’s a maths trick to this 0