i can't agree more.
I would like to hope there is a "working fund" at a unit, which lets say runs at £3000 a year. out of that comes paper and ink for the printer, servicing, MOT and insurance for the SOV, some sponsorship for the odd Cadet going on a significant course or camp, money towards replacement kit (namely AT tents, cookers, sleeping bags) and whatever else there is to spend annually.
I would hope the Treasurer is switched on enough to notice the trend that the unit continues to raise £2500 from subs (for arguments sake) but each year is having to take a little more from the savings to meet the shortfall due to inflation.
to counter this pinching from the savings (which could be paying for the replacement SOV in X years time or part of the IT fund to replenish the IT suite in Y years) the subs are raised.
it cannot be as straightforward as that i confess. with changing numbers of Cadets between years there is going to be a difference in income (Subs) directly proportional. but the model must have some validity over time.
it is how the RBL Branch operates which i sit on (wearing an RBL hat). we have a current account and savings account. each year the accounts are audited and considered by the Committee. We look to see where the differences are between years and make a judgement based on this.
we did ours recently (July) and found we'd spent £200 more this year than we had coming in - initially it looks bad as everything is thereabouts the same.
membership fairly static, expenses the same. but when studied it was all as a result of a large expense paid from the savings account. remove that from the spreadsheet our change in funds only moved by £18 (or one membership) so deemed no need to adjust the subs.
indicating they haven't gone up in X years so its about time isn't justification as these tend to be large step changes not small increments.
I actually like the system employed by @Plt_Off_Prune - seems very sensible. it is a fixed cost for the duration of the Cadets membership, yet over time through the natural cycle of Cadet numbers, as the Cadets start and leave comes a subtle increase in income