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Terms6 min read

Rent by the day, week or month? Which pays off and how the period is counted

By RentaCentro · Grupo ConstruMarket · Published · Updated

Komatsu excavators working on a site cutReference image

Short answer

By the day for one-off jobs; by the week or 15 days for stages that keep the machine busy several days in a row; by the month — or a 6-to-24-month contract — if it works continuously for more than 3 to 4 weeks. Count days of USE, not calendar days: in the site's estimate, weekly, 15-day and monthly rates count per started period, so 9 days at a weekly rate is 2 weeks.

At a glance

Which term to choose
TermBest if…Watch out for…
DayOne-off task, work spike or backupCovers 8 machine hours; the rest is overtime
WeekA stage of several consecutive daysCounted per started period: 9 days = 2 weeks
15 daysStages of about two weeksAlso per started period
MonthContinuous work over 3–4 weeksPaying a month for intermittent work
6–24 monthsSustained operationPreferred terms and rent-to-own

First: count days of USE, not calendar days

Before quoting, answer one question: how many days will the machine actually WORK, and how consecutive are they? A 3-day trench can stretch into 2 calendar weeks due to weather, permits or other trades. If the machine will wait alongside you, two well-scheduled short rentals may beat one long one; if it works non-stop, the longer term lowers the unit rate.

The started period, with an example

Weekly, 15-day and monthly rates count per started period: if you rent at a weekly rate and the machine stays 9 days, that's 2 weeks; at a 15-day rate, 1 period; at a monthly rate, 1 month. Hourly rates are estimated at 8 machine hours per day, and a rental day covers 8 hours — anything beyond is overtime on the hour meter. So before choosing, lay your days of use next to each period and see which leaves the fewest paid-but-unused days.

9 days of use: what each rate chargesDaily rate: 9 days. Weekly rate: 2 weeks (5 days paid but unused). 15-day rate: 1 15-day period (6 days paid but unused). Monthly rate: 1 month (21 days paid but unused). Site estimate convention: week, 15 days and month are charged per started period; a day covers 8 machine hours.9 days of use: what each ratecharges9 days of usepaid, not usedDaily rate: 9 daysWeekly rate: 2 weeks+5 d15-day rate: 1 15-day period+6 dMonthly rate: 1 month+21 dSite estimate convention: week, 15 days andmonth are charged per started period; a daycovers 8 machine hours.

When daily makes sense

  • Short, well-defined jobs: demolishing a wall, compacting backfill, lifting or unloading material over a weekend.
  • Work spikes: an extra front that lasts only a few days and doesn't justify keeping equipment longer.
  • Backup: your own machine is in the shop and the job can't stop in the meantime.
SIMAQ SQ60 PRO rammer (jumping jack)

When weekly or 15-day makes sense

  • Full stages: earthworks for one front, foundations, a slab pour — tasks that keep the machine busy several days in a row.
  • Try before you decide: a week with the machine on YOUR site says more than any spec sheet — ideal if you're considering buying that line.
  • 2-to-6-week projects with rotating fronts: chain weeks together and adjust the equipment mix between them.

When monthly makes sense — and long-term

If the machine works continuously for more than 3-4 weeks, monthly almost always wins: the unit rate drops and maintenance is scheduled calmly (and it's on us). If your operation needs it for months on end, 6-to-24-month contracts carry preferred terms and secure the machine for your project — including rent-to-own if you want to keep it at the end of the road.

RentaCentro fleet 20-tonne Komatsu excavator on site

The trick: quote the package with dates

Our quote flow lets you build a multi-machine list and attach start and return dates. Quote the whole STAGE (excavator + roller + rammer, from the 4th to the 22nd) instead of machine by machine: you get one proposal aligned with your schedule and a single point of contact, who reaches you during business hours.

Common mistakes

  • Paying a month for ten intermittent days of work.
  • Renting by the day for a job that clearly lasts three weeks.
  • Counting calendar days without allowing for weather, permits or other trades.
  • Running one day past a weekly period unplanned: the started week is charged.

Frequently asked questions

Can I start daily and switch to weekly or monthly?

Yes — tell your advisor and the term is restructured based on availability. It's common: the first days on site confirm the real pace.

How is it counted if I go a couple of days past the week?

In the site's estimate, weekly, 15-day and monthly rates count per started period: 9 days at a weekly rate is 2 weeks. Your advisor confirms the formal proposal.

How many hours does a rental day cover?

8 machine hours. Anything the hour meter shows beyond that is billed as overtime; if you'll run double shifts, say so when you quote.

Does maintenance change with the term?

No: preventive and corrective maintenance is on us at any term. On long rentals it's scheduled around your usage hours so the job isn't interrupted.

Which term secures machine availability?

Long-term contracts (6 to 24 months) reserve the machine for your operation. For short terms, quoting with dates from the start lets us hold the machine for your window.

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