Why Education Costs Break Ordinary Savings Maths
Two features make this different from any other savings goal, and ignoring either produces a number that is far too low.
Education inflation is its own number
Tuition has historically risen faster than general prices across most developed and emerging markets. Planning at headline CPI when the actual driver runs several points higher compounds into a very large error over a fifteen-year horizon.
At 8% a year, a fee doubles roughly every nine years. A $25,000 course today is around $68,000 in thirteen years — before you account for the fact that the later years of the course cost more than the first.
The money is drawn over years, not at once
This is the part most calculators get wrong. A four-year course is four separate payments, each inflating for a different length of time. Year four is paid three years after year one, so it inflates for three more years.
Cost of course year j
Costⱼ = Present Cost × (1 + i)^(T + j − 1)
- T = years until admission
- j = which year of the course, from 1
- The total is the sum across all j, not one grossed-up figure
There is a corresponding benefit: you do not need the whole sum on day one. Money for year four sits invested for three more years. That is why the corpus required at admission is meaningfully lower than the raw sum of inflated fees, and the table above shows both.
The glide path, and why it is not optional
Retirement saving can absorb a bad year because the horizon is long and flexible. An admission date is neither. A 30% drawdown eighteen months before the first fee is due cannot be recovered by waiting, because the money is needed on a fixed date.
The conventional response is to shift progressively out of equities as the date approaches — heavy equity at ten years out, minimal at one year. It costs some expected return in exchange for removing the scenario where the money is not there.
What this deliberately excludes
Scholarships, bursaries, student loans, part-time earnings and family contributions are all omitted. Treat the output as the fully self-funded case, which is the conservative planning figure. If aid materialises, you have over-saved for a goal — a much better failure mode than the reverse.