Courier Billing in India: Volumetric Weight, COD Fees and RTO, With the Arithmetic

A courier bills a parcel on the higher of two weights, charges a separate fee for collecting cash, and still charges you when a parcel goes back unopened. Those three rules decide whether an order makes money, and none of them shows up in a headline per-parcel rate. This article puts numbers on each, from the couriers' own pages where they are published, and says plainly where they are not.

How to read this article

• Sourced facts name the publisher and date in the sentence and have a numbered entry under Sources.
• Our arithmetic is marked as such. It uses a sourced formula with a box size we chose.
• Illustrations use assumed numbers that we say are assumed. Your rate card will differ.

1. Volumetric weight: the box you pack decides the price

Couriers move parcels in vehicles that fill up on space before they reach their weight limit. So they bill the greater of the actual (dead) weight and a size-based weight.

Delhivery's help centre states the size-based formula for surface and express shipments as length x breadth x height, in cm, divided by 5000, and the chargeable weight as the higher of that and the dead weight [1]. Its own example is a 60 x 25 x 40 cm box with a dead weight of 6 kg. The size-based weight is 60,000 / 5000 = 12 kg, so the parcel is billed as 12 kg.

Here is our arithmetic for a box a small seller might actually ship: 40 x 30 x 25 cm, with 2 kg of goods inside.

The parcel weighs 2 kg and you pay for 6 kg, three times the weight. Pack the same goods in a 30 x 20 x 15 cm box and the size-based weight falls to 9,000 / 5000 = 1.8 kg, so you pay for the actual 2 kg.

Three details matter for sellers:

• Flyer packs. Delhivery says it bills flyers on dead weight only, up to 1 kg [1]. Soft goods in a flyer avoid the size rule entirely.
• Rounding. Blue Dart rounds the actual weight up to the next half kilo or kilo depending on the rate category, and does the same for the size-based weight [2]. A figure of 6.32 kg will not be billed as 6.32 kg.
• Surface is different. Blue Dart's surface network uses 1 cubic foot = 10 kg, not the 5000 rule [2]. The same box can be billed differently on two services from the same courier.

What we could not confirm: India Post's divisor. Its tariff pages say the weight is gross or size-based, whichever is more, "as defined", without a number [4]. We have not seen a primary source for the figure that circulates online, so we do not quote it.

2. Zones: why the same box costs different amounts to different places

Rate cards price by weight slab and by zone, meaning how far the parcel travels. The structure is easy to see on India Post's Speed Post Parcel table, effective 1 August 2026, which has four zones: within city, within state, metro to metro and other states, with slabs up to 5 kg and a rate for each extra kg [5]. Delhivery uses six zones, A to F, from within a city to special regions such as the North East, Kashmir and the islands, and keeps the slab rates inside the seller dashboard [6].

The practical point is that a courier that is cheapest inside a city can be dearer than another across states. A single contract with one courier forces you to accept its weak zones. This is the argument for comparing rates for each order instead of fixing one courier for the whole shop.

3. COD: the fee, the wait and the cap

Cash on delivery adds three costs. Only one of them is the fee.

The fee. DTDC lists COD as a value-added service "at additional charges over and above the freight charges" and caps COD at Rs 50,000 per consignment [3]. Delhivery says COD shipments are charged "an additional cost for cash handling" and publishes no amount [6]. India Post offers COD on its parcel service "on payment of a fee" [7]. We found no courier that publishes its COD fee in a public tariff. The aggregator pattern, confirmed on Shiprocket's support page, is a flat charge or a percentage of the order value, whichever is higher. Its worked example: a Rs 750 order, 2.5 per cent is Rs 18.75, the flat charge is Rs 36, so Rs 36 is billed [8]. That is one example, not a tariff. On a small basket the flat fee decides the cost, and on a large one the percentage does.

The wait. Delhivery states it transfers the COD amount within 48 hours, on condition that bank details are correct and the wallet balance is positive [9]. We did not find a current stated timeline for Blue Dart; the only one we found is a 2016 press quote of next day [10], which is too old to rely on. The cost of the wait is working capital. Cash you have already delivered against is not yet available to buy stock.

The reconciliation. Every remittance has to be matched to orders, and a short payment has to be spotted and chased. The more couriers you use, the more statements you match by hand.

A note on regulation, because sellers ask. We found no RBI rule on COD. In a 2018 reply to a Right to Information request, reported by Business Today, the RBI said it had issued no specific instruction on the matter [11]. Separately, the Consumer Protection (E-Commerce) (Amendment) Rules, 2026, notified on 9 September 2026 and in force from 1 January 2027, make the 2023 guidelines on dark patterns binding on e-commerce platforms [12]. The rule text we saw does not mention COD. The Consumer Affairs Minister said in October 2025 that extra charges on COD orders were a dark pattern, which is reported by the press [13]. Treat that as a signal about direction, not as a current rule, and take advice before you add a "COD fee" line at checkout.

4. RTO: the cost nobody puts on the rate card

RTO means return to origin: the parcel could not be delivered and comes back. You usually pay the forward freight and often the return freight, and the goods are out of stock until they arrive.

Shipway's ShipNotes report for FY25, published 29 July 2025, puts RTO at 26 per cent for cash on delivery and non-prepaid orders and under 2 per cent for prepaid orders. By city it ranges from 18 per cent in Vadodara to 35 per cent in Patna, among cities with at least 5,000 non-prepaid orders [14]. It is a vendor report from one company's shipments, so it is a benchmark to compare yourself against, not a forecast for your shop.

Here is an illustration with assumed numbers, not data: suppose forward freight is Rs 80 and a return costs the same Rs 80. Take 100 COD orders at the 26 per cent benchmark.

• 26 orders come back. Freight spent on them: 26 x (80 + 80) = Rs 4,160.
• That is Rs 41.60 of lost freight on every COD order you ship, before the COD fee and before the goods are sold again.
• At 5 per cent returns the same sum is 5 x 160 = Rs 800, or Rs 8 per order.

So the return rate matters more than a rupee or two between couriers. Moving even a part of your orders to prepaid, with a small prepaid discount, or confirming COD orders by phone before dispatch, can be worth more than renegotiating the rate.

We could not find a primary source for the share of Indian online orders paid by COD. Published estimates range widely and we have not opened either source behind the figures we saw, so we do not quote one.

5. A checklist before you ship the next order

1. Weigh and measure the packed box. Calculate length x breadth x height / 5000 and compare it with the dead weight. The larger number is what you pay.
2. Try the smallest box that protects the goods. The size-based weight multiplies all three sides, so a few centimetres off each side cut it sharply.
3. For each order, compare couriers for that destination and weight. Do not assume the cheapest courier last week is the cheapest this week.
4. Ask each courier in writing for its COD fee, its remittance days and its return charges.
5. Reconcile every COD remittance to orders weekly.
6. Track your own RTO by pin code and by courier for one month. Stop COD or change courier in the places where it fails.

Where Ordrio Ship fits

Ordrio Ship connects a store to national and regional courier partners from one account. You can see delivery charges side by side for the order in front of you, print a label, share a tracking link and follow each shipment from pickup to delivery. It handles both COD and prepaid, with reconciliation of COD settlements. It runs with Nadi, Kadal and Vayu, or connects to an existing setup. It does not change a courier's formula; it shows you each courier's charge so you can apply the checklist above on every order.

Sign up for free or book a demo.

What we do not know

• The COD fee and the return charge of any named courier, because none publishes them.
• India Post's size-based weight divisor.
• Blue Dart's current COD payout timeline.
• The share of Indian online orders paid by COD.
• Whether the 2026 rules will be applied to COD fees.

Sources

1. Delhivery One Help Center, "Volumetric weight calculation", updated 17 June 2025. help.delhivery.com/docs/calculating-volumetric-weight
2. Blue Dart, Terms and Conditions of carriage. bluedart.com/conditions
3. DTDC, Support Service Guide. dtdc.com/support-service-guide
4. India Post, Speed Post Parcel and the Indian Post Office Rules, 1933. indiapost.gov.in
5. India Post, Speed Post Parcel (Domestic) rates, effective 1 August 2026. indiapost.gov.in/mailproducts/domesticservices/speedpostparceldomestic
6. Delhivery One Help Center, "Rate card", updated 20 December 2024. help.delhivery.com/docs/rate-card
7. India Post, India Post Parcel. indiapost.gov.in/mailproducts/domesticservices/indiapostparcel
8. Shiprocket support, "How to check the applied COD charges?", modified 28 August 2024. support.shiprocket.in
9. Delhivery One Help Center, "COD remittance", updated 14 November 2023. help.delhivery.com/docs/cod-remittance
10. Forbes India, 2 August 2016, quoting Blue Dart. bluedart.com/newsclip410
11. Business Today, 24 July 2018, on an RBI reply to a Right to Information request.
12. Department of Consumer Affairs, G.S.R. 789(E), 9 September 2026, Consumer Protection (E-Commerce) (Amendment) Rules, 2026. We read a reproduction on taxguru.in, not the Gazette copy.
13. Deccan Herald and Medianama, October 2025, on the Consumer Affairs Minister's statement about COD charges.
14. Shipway, ShipNotes FY25, published 29 July 2025.

Figures were checked on 6 October 2026. Courier terms change, so check your own agreement before you act.