Break-even duration

Equipment rents on three rates — a day rate, a week rate and a 28-day rate — and the cheapest one changes as the job runs long. This finds the two days where it changes, on a real listing’s real published rates.

Black Max portable generator

See the listing →

Jamal Henry · Generators - Portable

Day
$28
Week
$120
28 days
$300

Daily stops winning on

day 5

5 days at the day rate would be $140. On the week rate it is $120.

Weekly stops winning on

day 17

17 days at the day rate would be $476. On the 28-day rate it is $300.

The working

Whole weeks bill at the week rate; the leftover days bill at the day rate but never add up to more than one extra week; and a whole 28-day cycle never costs more than the 28-day rate. That is the rule, applied one day at a time.

Rental price by duration for Black Max portable generator, days 1 to 35
DaysAt the day rateOn the ladderDifferenceRate in play
1$28$28—day
2$56$56—day
3$84$84—day
4$112$112—day
5$140$120you save $20week
6$168$120you save $48week
7$196$120you save $76week
8$224$148you save $76week
9$252$176you save $76week
10$280$204you save $76week
11$308$232you save $76week
12$336$240you save $96week
13$364$240you save $124week
14$392$240you save $152week
15$420$268you save $152week
16$448$296you save $152week
17$476$300you save $17628-day
18$504$300you save $20428-day
19$532$300you save $23228-day
20$560$300you save $26028-day
21$588$300you save $28828-day
22$616$300you save $31628-day
23$644$300you save $34428-day
24$672$300you save $37228-day
25$700$300you save $40028-day
26$728$300you save $42828-day
27$756$300you save $45628-day
28$784$300you save $48428-day
29$812$328you save $484day
30$840$356you save $484day
31$868$384you save $484day
32$896$412you save $484day
33$924$420you save $504week
34$952$420you save $532week
35$980$420you save $560week

Rental rates only. Protection and the marketplace service fee are added on top — see the checkout figure below.

What checkout will quote you

Our pricing service couldn’t be reached just now, so there’s no checkout figure to show. The rate table above is unaffected — it’s the operator’s published card.

Pick a listing

The numbers come from one operator’s published rates, so the tool needs to know whose.

Where these numbers come from

The rates are the operator’s own, read live from their listing. The arithmetic is the same best-price billing engine that produces 2Quip invoices — not a second copy written for this page — run on the industry-standard terms: a 28-day cycle, whole weeks at the week rate, leftover days at the day rate capped at one more week.

An operator can agree different terms on an individual rental, and a long rental bills per 28-day cycle rather than in one lump. So treat this as what the rate card says, and the operator’s quote as what you are agreeing to.