CAIIB – BFM

CAIIB BFM – December 2026

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Packing Credit, Export-Bill Proceeds and Discount Calculations - Article

This article explains the calculation logic behind packing credit, export-bill proceeds and post-shipment discounting. It covers packing-credit interest, bill buying rates, Normal Transit Period, usance bills, upfront interest recovery, early realisation and adjustment of packing credit from export proceeds. It helps CAIIB BFM learners understand the correct sequence and avoid common numerical calculation errors.

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Introduction

Export finance normally moves through two stages:

  • Pre-shipment finance before goods are exported; and

  • Post-shipment finance after shipment until export proceeds are received.

Packing Credit is the main pre-shipment facility. After shipment, the bank may purchase, discount or negotiate the export bill and use the proceeds to liquidate the packing credit.

For CAIIB numerical questions, three calculations are especially important:

  1. interest on Packing Credit;

  2. rupee value and net proceeds of an export bill; and

  3. discount or interest for the post-shipment period.

The important point is to understand the sequence of calculations, rather than mixing pre-shipment and post-shipment interest.

Quiz Academy keeps detailed formula explanations and solved numerical examples in a separate Formula Section, so this article focuses on the concepts, calculation relationships and exam traps required to understand these numericals.

Learning Objectives

After studying this topic, you should be able to:

  • Understand how Packing Credit is granted and liquidated.

  • Calculate the interest period applicable to Packing Credit.

  • Determine the rupee value of foreign-currency export bills.

  • Distinguish demand-bill and usance-bill discount periods.

  • Apply Normal Transit Period correctly.

  • Determine the sequence for arriving at net export-bill proceeds.

Packing Credit: The Starting Point

Packing Credit, also called pre-shipment credit, is finance provided by a bank to an exporter before shipment.

RBI defines it broadly as a loan, advance or other credit granted for financing activities such as:

  • purchase of goods or raw materials;

  • processing;

  • manufacturing;

  • packing; or

  • eligible working-capital expenditure relating to export services,

against an export LC, confirmed and irrevocable export order or other acceptable evidence of an export commitment.

The amount and period of Packing Credit depend on factors such as:

  • value of the export order;

  • cost of production or procurement;

  • margin stipulated by the bank;

  • manufacturing cycle;

  • time required for packing and shipment;

  • sanctioned export-credit limit; and

  • terms of the export order or LC.

How Packing Credit Is Liquidated

Packing Credit is normally liquidated from the related export transaction.

After shipment, the exporter submits export documents to the bank. The bank may:

  • purchase the export bill;

  • discount the bill;

  • negotiate documents under an LC; or

  • otherwise realise the eligible export proceeds.

The Packing Credit outstanding can then be adjusted from the proceeds of the related export bill. RBI's export-credit framework expressly recognises liquidation of pre-shipment credit through purchase, discount or similar handling of the relative export documents.

Therefore, the normal flow is:

Packing Credit → Shipment → Export Bill → Post-Shipment Finance → Realisation

Transaction-flow diagram showing how Packing Credit converts into post-shipment export finance and is ultimately liquidated from export proceeds.
Export finance normally moves from Packing Credit to export-bill finance and finally to overseas realisation.

Packing Credit Interest

Packing Credit interest is calculated for the period during which the bank's pre-shipment funds remain outstanding.

The relevant period generally begins from the date of advance and continues until the Packing Credit is liquidated or adjusted according to the applicable terms.

Packing Credit Interest

This calculates interest on the pre-shipment advance for the period it remains outstanding.

Refer to the Formula Section for a detailed explanation, variables, and solved examples.

The day-count basis should be taken from the question or applicable bank convention rather than assumed where it is specifically stated.

Staggered Disbursement

Packing Credit may be released:

  • in one lump sum; or

  • in stages according to the exporter's requirements.

RBI permits banks to release Packing Credit in stages according to the requirements for executing the export order or LC.

If a numerical provides different disbursement amounts on different dates, interest should not be calculated as though the entire sanctioned amount was outstanding from the first date.

Each amount must be associated with its actual period of utilisation.

Packing Credit Period vs Export-Bill Period

These are two separate financing periods.

Basis

Packing Credit

Export-Bill Finance

Stage

Before shipment

After shipment

Starting Point

Advance/disbursement

Purchase, discount or negotiation of bill

Ends Normally

Adjustment from export documents/proceeds

Receipt of export proceeds

Main Interest Basis

Pre-shipment utilisation period

NTP, usance period or applicable due-date period

Purpose

Finance export preparation

Finance export receivable

A numerical may contain both periods. Calculate them separately.

Export Bill after Shipment

Once goods are exported, the exporter acquires a foreign-currency receivable from the overseas buyer.

Instead of waiting for final payment, the exporter may obtain post-shipment finance by submitting the export bill and documents to the bank.

The bank may:

  • purchase a demand bill;

  • discount a usance bill;

  • negotiate documents under an LC; or

  • finance a bill sent for collection, subject to sanction.

Under the current FEDAI Rule 2.1, foreign-currency bills purchased, discounted or negotiated are converted at the Authorised Dealer's:

  • current bill buying rate, or

  • contracted rate, where applicable.

Interest for the Normal Transit Period and/or usance period is recovered upfront simultaneously.

FEDAI's website currently identifies its Rules, 10th Edition, as updated up to 30 May 2025.

Calculating the Rupee Value of an Export Bill

Where the foreign-currency export bill is purchased or discounted at a bill buying rate, the first step is to determine its rupee equivalent.

Gross Rupee Value

Gross Rupee Value = Foreign Currency Bill Amount × Applicable Bill Buying Rate

This converts the foreign-currency export receivable into its gross rupee value under a direct quotation such as ₹ per USD.

Refer to the Formula Section for a detailed explanation, variables, and solved examples.

If an applicable forward or other contracted rate exists, the contracted rate is used according to the transaction terms instead of automatically using the prevailing bill buying rate. FEDAI Rule 2.1 expressly recognises the current bill buying rate or contracted rate.

Why the Bill Buying Rate Is Used

When a bank purchases or discounts a foreign-currency export bill:

  • the bank gives rupees to the exporter now; and

  • expects to receive foreign currency later.

From the bank's perspective, it is therefore buying foreign currency.

That is why a buying-side exchange rate is relevant.

This should be distinguished from an import transaction, where the customer normally needs to buy foreign currency from the bank.

Demand Bills and Normal Transit Period

A demand or sight export bill does not contain a long usance period.

However, the bank still funds the exporter between purchase of the bill and expected receipt of foreign currency.

For this purpose, Normal Transit Period (NTP) becomes important.

FEDAI defines NTP as the average period normally involved from the date of negotiation, purchase or discount until receipt of the bill proceeds. It is not the time required for the physical goods to reach the overseas destination.

Current FEDAI NTP: Important Cases

Under current FEDAI Rule 2.3:

Transaction

NTP

Foreign-currency DP/at-sight bill not under LC

25 days

Rupee DP/at-sight bill not under LC

20 days

Rupee LC – reimbursement at centre of negotiation

3 days

Rupee LC – reimbursement in India at another centre

7 days

Rupee LC – reimbursement by bank outside India

20 days

LC with reimbursement by electronic means

5 days

Where an LC allows a reimbursement claim only after an additional specified period from negotiation, current FEDAI Rule 2.3 provides for 5 days plus that additional period.

FEDAI also permits an AD bank, in specified exceptional situations, to apply a different NTP for certain DP/at-sight bills based on documented historical factors such as exporter, buyer, destination and transport mode.

Post-Shipment Interest on a Demand Bill

For a demand bill, post-shipment interest is generally calculated for the applicable NTP or other permitted finance period.

Post-Shipment Interest

This determines the interest recovered for the period during which the bank expects its post-shipment funds to remain outstanding.

Refer to the Formula Section for a detailed explanation, variables, and solved examples.

Under current FEDAI rules, this interest is recovered upfront when the foreign-currency bill is purchased, discounted or negotiated.

Usance Export Bills

A usance bill becomes payable after a stated credit period.

The tenor may be expressed as:

  • days after sight;

  • days after shipment;

  • days after bill of lading date;

  • days after invoice date; or

  • a fixed due date.

The first step is to identify the actual due date according to the bill terms.

NTP Is Not Automatically Added to Every Usance Bill

This is an important exam point.

FEDAI Rule 2.3 states that where the due date of an export usance bill is fixed or can be calculated from:

  • shipment date;

  • bill of exchange date; or

  • another stated base date,

the actual due date is known and NTP is not applicable.

Therefore, do not mechanically add NTP to a usance period when the bill already has a determinable actual due date.

Discount on a Usance Export Bill

Where the bank provides immediate finance against an amount receivable at a future date, interest or discount relates to the financing period up to the applicable due date.

Export-Bill Discount

This represents the financing cost for receiving the proceeds before the foreign-currency receivable becomes due.

Refer to the Formula Section for a detailed explanation, variables, and solved examples.

The exact number of days depends on:

  • tenor wording;

  • relevant base date;

  • date of purchase or discount;

  • maturity/due date; and

  • any specific convention given in the question.

Decision tree explaining when Normal Transit Period or the actual usance due date is used for calculating export-bill interest.
First classify the bill as demand or usance before selecting the post-shipment interest period.

Calculating Net Export-Bill Proceeds

The exporter does not necessarily receive the full gross rupee equivalent of the bill.

The bank may deduct:

  • post-shipment interest or discount;

  • commission;

  • postage or SWIFT charges;

  • other permitted charges; and

  • Packing Credit outstanding that is being liquidated.

Net Amount Available after Deductions

Net Export-Bill Proceeds = Gross Rupee Value − Interest/Discount − Applicable Charges

This determines the amount remaining after post-shipment financing cost and applicable charges.

Refer to the Formula Section for a detailed explanation, variables, and solved examples.

Where Packing Credit is also adjusted from the same transaction:

Balance Creditable after Packing Credit Adjustment = Net Export-Bill Proceeds − Packing Credit Outstanding

This identifies the residual amount available after liquidation of the related pre-shipment advance.

Refer to the Formula Section for a detailed explanation, variables, and solved examples.

Packing Credit interest already debited or separately recoverable must be handled according to the facts given in the numerical. It should not be deducted twice.

Correct Calculation Sequence

A CAIIB numerical involving the complete export-finance cycle should normally be approached in this order:

Step 1: Identify Packing Credit Actually Utilised

Do not automatically use the entire sanctioned limit.

Step 2: Determine Packing Credit Period

Identify:

  • disbursement date; and

  • date of liquidation or adjustment.

Step 3: Determine Packing Credit Interest

Apply the specified rate and applicable day-count convention.

Step 4: Determine Foreign-Currency Bill Amount

Check whether the full invoice value is being financed or whether there are:

  • advance receipts;

  • undrawn balances;

  • deductions; or

  • other adjustments.

Step 5: Apply Correct Exchange Rate

For a foreign-currency bill purchased, discounted or negotiated, use:

  • applicable bill buying rate; or

  • contracted rate, where relevant.

Step 6: Classify the Bill

Determine whether it is:

  • demand/sight; or

  • usance.

Step 7: Determine Post-Shipment Finance Period

For a demand bill, identify the applicable NTP.

For a usance bill with a known actual due date, do not automatically add NTP.

Step 8: Calculate Post-Shipment Interest or Discount

Apply the relevant amount, rate and period.

Step 9: Deduct Charges

Include only charges stated in the question.

Step 10: Adjust Packing Credit

Use the post-shipment proceeds to liquidate the Packing Credit outstanding where the transaction requires it.

The remaining amount represents the balance available to the exporter.

Early Realisation

Sometimes an export bill is realised before the period for which interest has already been recovered.

Current FEDAI Rule 2.2 provides that in case of early realisation, interest for the unexpired period is refunded to the customer. Applicable notional swap consequences may also arise.

Refund for Unexpired Interest Period

Interest Refund = Relevant Amount × Annual Interest Rate × Unexpired Days ÷ (100 × Applicable Day-Count Basis)

This determines the interest attributable to the unused portion of the originally charged financing period.

Refer to the Formula Section for a detailed explanation, variables, and solved examples.

A numerical may therefore require the learner to distinguish between:

  • interest originally recovered; and

  • interest ultimately chargeable after early realisation.

Export Bills Sent for Collection

A bill sent purely for collection differs from a bill purchased or discounted.

Under current FEDAI Rule 2.5, foreign-currency proceeds of export bills sent for collection are converted at:

  • prevailing TT buying rate; or

  • applicable contracted rate,

after the foreign-currency amount has been credited to the bank's Nostro account.

This creates an important rate-selection distinction:

Transaction

Relevant Rate Concept

Export bill purchased/discounted/negotiated

Bill buying rate or contracted rate

Export bill sent for collection and realised

TT buying rate or contracted rate

Do not use the terms Bill Buying Rate and TT Buying Rate interchangeably.

Overdue Export Bills

Under FEDAI Rule 2.2, overdue interest becomes relevant where payment is not received:

  • within NTP for a demand bill; or

  • on/before the applicable notional or actual due date for a usance bill.

The precise rate and treatment depend on RBI directions and bank policy.

For numerical questions, use the overdue rate and dates supplied in the problem rather than inventing a standard overdue rate.

Practical Banking Application

Consider the workflow at a branch handling an exporter.

The exporter first avails Packing Credit against an export order.

The branch should monitor:

  • utilisation of funds;

  • progress of production;

  • shipment;

  • submission of export documents; and

  • adjustment of Packing Credit.

After shipment, if the bank purchases or discounts the bill:

  • the foreign-currency bill is converted using the appropriate rate;

  • post-shipment interest is recovered for the relevant period;

  • charges are deducted;

  • Packing Credit is adjusted; and

  • the residual amount is credited to the exporter.

When the overseas proceeds finally reach the bank, the post-shipment advance is liquidated.

This sequence shows why the same export transaction can contain two different interest calculations—one before shipment and another after shipment.

CAIIB Exam Focus

Remember these high-value points:

  • Packing Credit is pre-shipment finance.

  • Interest is based on the amount actually outstanding and the relevant period.

  • Staggered disbursements may require separate period calculations.

  • Packing Credit is normally liquidated through the related export transaction.

  • A purchased, discounted or negotiated foreign-currency bill uses the current bill buying rate or contracted rate under current FEDAI rules.

  • Interest for NTP and/or the applicable usance period is recovered upfront under FEDAI Rule 2.1.

  • NTP relates to receipt of bill proceeds, not physical arrival of goods.

  • Current FEDAI NTP for a foreign-currency DP/at-sight bill not under LC is 25 days.

  • For a usance bill with a fixed or determinable actual due date, NTP is not automatically applicable.

  • Export bills sent for collection use the TT buying rate or contracted rate after foreign currency is received.

  • Early realisation can result in refund of interest for the unexpired period.

  • Packing Credit interest and post-shipment discount are separate costs.

Common Exam Traps

Trap 1: Using the Entire Sanctioned Packing Credit Limit

Incorrect when the question states a smaller actual utilisation.

Interest should be based on the amount actually outstanding.

Trap 2: Calculating Packing Credit Interest up to Overseas Realisation

Incorrect in a normal conversion from pre-shipment to post-shipment finance.

Packing Credit normally ends when it is appropriately adjusted, after which post-shipment finance applies.

Trap 3: Using TT Buying Rate for Every Export Bill

Incorrect.

A bill purchased, discounted or negotiated uses the applicable bill buying or contracted rate under FEDAI Rule 2.1. TT buying applies in situations such as realised collection bills under Rule 2.5.

Trap 4: Treating NTP as Shipping Time

Incorrect.

NTP measures the normal banking period from purchase, negotiation or discount until receipt of proceeds.

Trap 5: Adding NTP Automatically to Every Usance Bill

Incorrect.

Where the actual due date is known or determinable, current FEDAI Rule 2.3 states that NTP is not applicable.

Trap 6: Deducting Packing Credit Interest Twice

Incorrect.

Check whether Packing Credit interest has already been debited or included in the question before deducting it again from export-bill proceeds.

Trap 7: Ignoring Early Realisation

Incorrect where upfront interest was charged for a longer period.

FEDAI provides for refund of interest attributable to the unexpired period in case of early realisation.

Memory Technique

Remember P-B-I-A:

  • P – Packing Credit: calculate pre-shipment utilisation and interest.

  • B – Bill Value: convert foreign currency using the correct buying/contracted rate.

  • I – Interest: determine NTP or the applicable usance period.

  • A – Adjustment: deduct interest, charges and Packing Credit to determine the balance available.

Back to Packing Credit, Export-Bill Proceeds and Discount Calculations