I also follow this with much interest. I'm thinking of maybe a few thousand and once I do it -that's it -in for life. Should I bother? -should i just keep at the 10 year bonds with the post office - interest guaranteed.
theresa1, and anyone else thinking of investing "a few thousand" in prize bonds,
do make sure you understand the likely variability in your returns. This is dramatically different for someone investing a thousand euro, versus someone investing a million. The
average percentage return is the same for both -- you will get about 1.1% in both cases. BUT ... and this is an enormous BUT ... the chance of things averaging out in a given timeframe, say, a year, are very different. In fact for very small investments they are, of course, impossible.
To illustrate that point, let's say you just buy a single prize bond for €6.25. Your 1.1% return will be just under 7c/year, right? But you can't
win 7c -- the smallest prize is €50. So actually, on average what you will get is a €50 win every (wait for it...) 700 years or so! Ok then, that clearly isn't going to yield any return at all in a viable timeframe, so let's up our investment to €4,550. At 1.1%, that gets us a nice even €50/year ... a single prize, right?
Not so fast! As well as being able to calculate that your average return is 1.1% (with a crucial emphasis on
average) we can also calculate the likelihood that you will
diverge from the average by a given amount. Here was the graph for a €10k investment from my post on page 1 -- this shows the number of €50 wins along the bottom, and each bar shows the percentage likelihood of getting that number of wins:
Although the
average number of wins per year here is just over 2 (to give you your 1.1% yield) the chances that you'll only get one win -- halving your return -- are very significant, at over 20%. And the chances that you'll get no wins at all are 10%. (Of course, you could equally win
more than two, so to some extent this boils down to whether you are looking at this as an investment or a gamble).
Things get even worse if you reduce the investment to, say, €1k. Actually, the €10k graph above is a good reflection of the odds for €1k after ten years. In other words, with €1k invested there is a 10% chance that you will have won nothing at all over 10 years. Conversely, consider the graph for someone who invests €100k for one year:
Now, this person stands to win just over 22 x €50 euro prizes each year, to make up their 1.1% return. To only get half that yield they'd have to win 11 prizes or less. I didn't even bother showing those numbers on the graph because they are very low. But if I did it, and added up all the bars for 11 prizes or less, they would sum to about 1%.
To reiterate: at €100k you have a 1% chance of getting less than half the average return in a given year. At €10k, you have a more than 30% chance of getting less than half your anticipated average of 1.1%. (Another way of putting this is that if ten people reading this invest €10k expecting two prizes, three of them will be back here next year complaining they won zero or one). This is the crucial point. The
average is still 1.1% for everyone ... but, what I like to call the "lumpiness" of the different possible returns, is much greater for the smaller investor.
In the long run, it all evens out of course. But the less you invest, the longer it may take to even out. So the small investor needs to consider whether they are prepared to wait years or even decades to achieve their average 1.1% annualised return.
(This also explains why I used the figure of 1.1% in the first place, and not the 1.6% that the Prize Bonds company tells you is in the prize fund. Some of the fund is made of large prizes which even the very large investor is unlikely to ever win in a viable timeframe. The average is indeed 1.6%, but even the €100k investor would probably wait millennia for that to average out because of the lumpiness in the odds for the big prizes. I did point out that at €100k+ your likely returns start to edge toward 1.3% because you can include some €100 prizes within a viable time horizon, but that figure is now reduced somewhat again since changes in the prize structure this year).