Switching from single-use to reusable packaging has a cash-flow shape that catches people out: a large outflow at the start, savings that accrue slowly, and a period where you are paying for both. Budgeting for that overlap explicitly is what stops the project running out of money halfway.
The overlap is the whole problem
You buy the new fleet before you can stop buying the old packaging, because you cannot run out. For at least one cycle – a season, a quarter, whatever your rhythm is – both costs are live. Put that in the budget as a named line rather than hoping the transition is clean.
The practical fix is to run down existing single-use stock while the reusable fleet builds. Do not write off the old stock; consume it. It is slower and considerably cheaper than a hard cutover.
Buy in tranches
Converting site by site, or line by line, spreads the outflow and lets each tranche prove itself. It also means a specification mistake costs one tranche rather than the whole fleet – which is the most valuable thing about phasing and worth more than the cash-flow benefit.
Size the first tranche to the smallest deployment that gives you a real answer. Usually that is one site or one product family, fully converted.
Four lines people forget
Buffer stock. Attrition means the fleet shrinks; budget a top-up, typically a percentage of fleet per year, and buy it when you buy the fleet rather than scrambling later.
Washing or servicing equipment, if the application needs it. Sometimes a change of process rather than a capital purchase, but it has a cost either way.
Storage and handling of empties – racking, cages, or simply floor space, and the labour of managing the return.
Identification and tracking, if you intend to measure loss. Cheap labels or tags, and someone’s time to count.
What to do with the old supplier contract
Check the notice period and any minimum-volume commitment before you announce anything. Packaging contracts are usually light, but a committed volume you are about to stop taking is a real cost and sometimes a penalty.
And tell the incumbent. A supplier who hears about a change when orders stop is a supplier you may need again during the transition.
A realistic shape
Year one: higher total spend than today, because you are buying the fleet and still buying some single-use. Year two: materially lower. That is the normal profile and it is worth showing it that way rather than presenting an annualised figure that hides the trough.
Fleet sizing for a produce season is worked through in working out crate fleet size for a season.
How to size the first tranche
The smallest deployment that gives a real answer. One site or one product family, fully converted – not a partial conversion across several, which produces ambiguous results and a fleet too thin everywhere to work.
Rule of thumb: the first tranche should be large enough to run the operation properly and small enough that a specification mistake is an annoyance rather than a write-off.
What to do with the old packaging
Consume it rather than scrapping it. Run down existing stock alongside the new fleet for a cycle, even though it slows the transition visually – writing off usable stock is the most expensive part of most switches and it is entirely avoidable.
Check the incumbent contract first: notice period, minimum-volume commitment, and whether a run-out order is cheaper than a new one. Sometimes the answer is to buy one last batch on the old terms.
What we can do
We make PP crates for fruit and vegetables and will quote tranches rather than pushing a single large order. Tell us your conversion plan and we will price it your way – including the first tranche being deliberately small.