Porta Potty Forum

Why is there a separate fuel surcharge on our October 2026 service invoice?

Marcus B.asked 1 viewCosts & Rental QuotesMonthly rentalDelivery feeFuel surchargeService visitInvoice

We have a long-term rental for a construction site with one standard unit and one ADA-compliant unit. The monthly rental rate was quoted with weekly service included, and the invoice usually just shows the flat fee. This October 2026 invoice has a new line item for a fuel surcharge. The quote did not mention any variable charges, and the rental company has truck access to our site on a paved street. What drives a fuel surcharge, and can they add it without notice? Should the monthly rate cover all service costs?

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Nina R.Nashville, TN

A fuel surcharge covers rising diesel costs for the vacuum truck that services your units, and rental companies can add it without notice if their contract allows it. Your monthly rate covers the base rental and standard weekly service visits, but fuel surcharges are often variable fees passed through when fuel prices spike. They're driven by market diesel rates, delivery distance, and service frequency, not your site's paved access. Check your rental agreement for a fuel clause or a general provision on variable costs. If it's silent, ask the operator for their policy. Long-term contracts sometimes lock in rates, but many include surcharges to hedge against fuel volatility. In my experience, a clear contract avoids surprises, so review yours and negotiate fixed pricing if possible for future terms.

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