Buying Janitorial Supplies Monthly vs Quarterly: Cash Tied Up vs Price Per Case, a Worksheet From Your Own Invoices
The short answer: quarterly ordering wins when the per-case price drop on the larger order is bigger than the cost of holding two extra months of stock, and for most restroom consumables it is, because the stock is cheap, does not expire and takes up little room. Monthly ordering wins on anything slow-moving, bulky, or with a shelf life, and on any line where the quarterly quote is not actually cheaper per case. Nobody can tell you which side you are on without your two quotes, so this page gives you the worksheet, the counts to fill it with, and worked example math you can overwrite with your own invoice.
Why this is a per-line decision, not a policy
Facilities managers tend to pick one rhythm for everything. That is the mistake. Toilet tissue for 50 people is under a case a month and the case does not go bad, so the only question is the price break. A drum of floor stripper used twice a year is a different decision, and so is a pallet of can liners when the storeroom is a closet. Our case-vs-retail post makes the general point that bulk pays on non-perishable, high-turnover items you would reorder within about 90 days anyway; this page puts numbers on the “about.”
Step one: get the same list quoted two ways
Take your standard list, the one from the per-employee build or your last three invoices, and ask for it priced at one month’s quantity and at three months’ quantity. Ask for the price per case on each, delivered, and note any delivery charge separately. If your supplier will not quote both, send us the invoice and we will. Without two quotes, every row below is guesswork.
The worksheet
One row per item. Every number comes from your own quotes and your own count; the only inputs you choose are the cost-of-cash rate and what a stockout costs you.
| Column | What goes in it | Where it comes from |
|---|---|---|
| A. Monthly usage (cases) | Cases used per month at your headcount. | The supplies calculator or a one-month count of empties. |
| B. Case price, monthly quantity | Delivered price per case when you order A each month. | Quote 1. |
| C. Case price, quarterly quantity | Delivered price per case when you order 3 × A at once. | Quote 2. |
| D. Quarterly saving on product | (B − C) × 3A. The price break, in dollars per quarter. | Arithmetic. |
| E. Extra cash tied up | On average a quarterly order holds one extra month of stock over the quarter, so E = C × A × 1 (the average extra month), or 2 × C × A on the day it lands. | Arithmetic; use the average figure for the cost, the peak figure for the storeroom. |
| F. Cost of that cash | E × your annual rate ÷ 4. Use your line-of-credit rate, or the return you would otherwise get on the money. | Your bank or your judgement; label it. |
| G. Storage | Cases on hand at peak × floor area per case, against the space you have. Zero if it fits; the rent per square foot of the space it takes if it does not. | Measure a case. |
| H. Delivery difference | Delivery charges on three monthly orders minus one quarterly order. | Both quotes. |
| I. Stockout exposure | How often you ran out last year × what the emergency run cost above your case price. | Last year’s retail receipts; the case-vs-retail post explains the gap. |
| Result | D + H + (I saved) − F − G. Positive means order quarterly; negative means monthly. |
Worked example: 50 people, four restroom lines
All dollars below are example math, chosen round so the shape is visible; substitute your quotes. The counts are the ones from the per-employee build: at 2 visits a day, 15 sheets a visit and 21 working days, 50 people use about 31,500 sheets of 2-ply tissue a month, which on Scott Professional 04460 (550 sheets a roll, 80 rolls and 44,000 sheets a case per Kimberly-Clark’s product page) is 0.72 of a case; about 3,150 multifold towels, 0.79 of a 4,000-towel case; 2,100 handwashes of foam soap, about a litre at the foam dose the build uses; and 1,050 desk-side liner pulls, two-thirds of a 500-count case.
| Line | A. Cases/mo | B. Monthly qty $/case | C. Quarterly qty $/case | D. Saving/qtr | E. Avg extra cash | F. Cost of cash/qtr at 10% |
|---|---|---|---|---|---|---|
| 2-ply tissue (04460) | 0.72 (order 1 / 3) | $60 | $55 | $15 | $55 | $1.38 |
| Multifold towels, 4,000/case | 0.79 (order 1 / 3) | $35 | $32 | $9 | $32 | $0.80 |
| Foam soap, 1 L | 0.83 (order 1 / 3) | $9 | $8 | $3 | $8 | $0.20 |
| Desk-side liners, 500/case | 0.67 (order 1 / 2) | $30 | $28 | $4 | $28 | $0.70 |
| Total | $31 / quarter | $123 | $3.08 |
At those example prices the quarterly order saves about $31 a quarter on product against roughly $3 in the cost of the cash and a stack of eight cases and three litres of soap in a corner. Add a delivery charge saved on two of the three monthly orders and the gap widens. That is the typical shape for restroom consumables: the break is small per case, the holding cost is smaller still, and the decision is not close. If your quote 2 comes back at the same per-case price as quote 1, D is zero and the only reason left to order quarterly is delivery and stockouts.
Where monthly wins
Chemicals with a shelf life or a bulky drum. Check the label and the SDS for a shelf life before stacking a quarter of it; a product that separates or loses strength is a saving that turns into waste. A floor finish used at the summer strip-and-wax belongs on a seasonal order, not a quarterly one.
Liners and paper when the storeroom is a closet. Column G is where quarterly orders die in small offices. A pallet of can liners is cheap per pull and expensive per square foot if it lives in the hallway. Cost per pull is the right unit for liners; if the quarterly price per pull is not lower, buy monthly.
Anything whose usage you have not measured. A quarterly order on a guessed count is three months of the wrong item. Run the one-week or one-month count first; the restroom usage post gives the method.
Cash that is genuinely tight. Column F uses 10 percent as an example rate. If the money would otherwise sit on a card at a much higher rate, put that rate in. The quarterly order is still usually ahead, but the margin narrows, and a standing monthly order on account removes the cash question entirely.
The middle path: par levels and a standing order
Our business accounts page makes the point that once pricing is on account, the largest remaining saving is order frequency: set a par level for each item from your peak week, not your monthly average, and place one consolidated order on a fixed day rather than reactive ones. Quarterly quantity, monthly delivery is the version that captures most of column D without columns E and G: the supplier holds the stock, the price is set on the quarter’s volume, and the van shows up on the same day each month across Miami-Dade to Palm Beach. Ask for it by name.
What to do with the result
Run the sheet once with both quotes, then set the rhythm per line: quarterly on tissue, towels, soap and liners if D beats F plus G; monthly on chemicals and anything bulky; seasonal on floor care. Write the par level for each line on the storeroom shelf and reorder against it. Then re-run the sheet when a price changes, which is the only time the answer moves.
FAQ
Is it cheaper to buy janitorial supplies quarterly or monthly?
Usually quarterly for restroom consumables, because the per-case price break on a larger order is bigger than the cost of holding two extra months of cheap, non-perishable stock. It depends on your two quotes: if the quarterly quote is not lower per case, only delivery savings and stockout avoidance favour it. Chemicals with a shelf life and bulky items in a small storeroom usually favour monthly.
How much cash does a quarterly supply order tie up?
On the day it lands, two extra months of stock at the quarterly per-case price; averaged over the quarter, one extra month. For a 50-person office on four restroom lines, that is a little over a hundred dollars at example prices, and the cost of that cash at 10 percent a year is a few dollars a quarter.
What is a par level and how does it change the order size?
The quantity on the shelf that triggers a reorder. Set it from your peak week rather than your monthly average, because running out costs more than holding. With par levels set, the order size is whatever brings each line back to par, whether that is placed monthly or quarterly.
Can I get quarterly pricing but monthly delivery?
Yes. A standing order on a business account can be priced on the quarter’s volume and delivered monthly, which captures most of the price break without the cash and storage cost. Ask for it when you open the account.