How is monthly-slab billing calculated?

Monthly rate prorated by working/deployment days, plus kilometres run beyond the slab billed at an extra-km rate. Deployment-day rules vary by platform and must match the contract.

Is billed km the odometer reading?

No. For per-km contracts the billed km is the contracted route distance, not the truck odometer, which is why a rate card per lane is needed.

Per-km vs per-trip vs monthly-slab billing for hired vehicles: which to use?

Q: When should a transporter bill per-km vs monthly slab?

Per-km when the platform pays for distance on contracted routes; monthly slab when a vehicle is dedicated for a deployment period, paid by working days plus extra-km beyond the slab. The contract specifies which.

By TFTOne team · 15 June 2026

Use per-km when the platform pays for distance run on contracted routes, per-trip for fixed-route runs, and monthly slab when a vehicle is dedicated for a deployment period (paid by working days, with extra-km beyond the slab billed per-km). The contract decides which — and getting the slab/deployment-day and GST math right is where Excel slips.

The three models

Per-kilometre

Rate × contracted kilometres for the route. The billed km is the contracted route distance, not the odometer. Common for adhoc and variable e-commerce line-haul.

Per-trip

A fixed amount per run on a fixed route. Simple, but doesn’t flex with distance.

Monthly slab (dedicated deployment)

A monthly rate for a vehicle dedicated to the platform, prorated by working/deployment days, with kilometres beyond the slab billed at an extra-km rate. Quick-commerce and B2B feeders often use this.

Where it goes wrong

Mixed ÷30 and ÷31 proration in the same invoice; deployment-day rules applied inconsistently; GST treatment differing by contract; tolls double-counted or missed. Each is a small Excel slip that ends up in an invoice to a large retailer.

Let the rate card and the system do the math. TFTOne holds per-km, per-trip and slab rate cards per lane and contract, applies deployment-day rules, and generates invoices to the rupee — including the right GST per contract type.

Rent vehicles to Flipkart, Amazon or quick commerce?

TFTOne does this end to end — per-km/slab billing, platform MIS reconciliation, and FASTag toll claims. Book a demo and we’ll regenerate your last month’s invoices against your originals.

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