## Exchange Loss on Foreign Currency Borrowings for Qualifying Assets
### Background
When a company takes a foreign currency loan to finance a qualifying asset, two costs arise:
1. Interest on the foreign loan (converted to ₹ at the exchange rate)
2. Exchange loss when the rupee depreciates against the foreign currency (the loan repayment amount in ₹ increases)
AS 16, read with AS 11 (Effects of Changes in Foreign Exchange Rates), allows a portion of the exchange loss to be capitalized — because it is economically equivalent to additional interest had the loan been taken in Indian currency.
---
### The Core Logic
If the company had borrowed in India instead, it would have paid a higher interest rate (INR loans typically cost more than foreign loans before accounting for exchange risk). The exchange loss is the "hidden" additional cost of borrowing cheaply abroad. You may capitalize the exchange loss up to the cap — the excess interest that would have been paid domestically.
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### Maximum Capitalizable Exchange Loss (The Cap)
```
Cap = Interest on Equivalent INR Loan − Interest Actually Paid on Foreign Loan (in ₹)
```
### Step-by-Step Calculation
Step 1 — Interest on foreign loan (in ₹):
```
= Foreign Loan Amount × Foreign Interest Rate × Period × Closing Exchange Rate
```
Step 2 — Exchange loss on loan principal:
```
= Loan Amount (in FC) × (Closing Rate − Opening Rate)
```
Step 3 — Equivalent INR loan value:
```
= Foreign Loan Amount × Opening Exchange Rate
```
Step 4 — Interest if loan was in INR (at comparable Indian rate):
```
= Step 3 × Indian Interest Rate × Period
```
Step 5 — Maximum capitalizable exchange loss:
```
Cap = Step 4 − Step 1
```
Step 6 — Apply the cap:
- If Actual Exchange Loss (Step 2) ≤ Cap → Capitalize the full actual exchange loss
- If Actual Exchange Loss (Step 2) > Cap → Capitalize only up to the Cap; the excess goes to P&L
Step 7 — Total amount capitalized:
```
Total Capitalized = Foreign Interest (₹) + Exchange Loss Capitalized
```
---
### Special Rule: Exchange Gain
If the rupee appreciates against the foreign currency (exchange gain), the above treatment does not apply. Transfer the exchange gain directly to P&L. Do not reduce the borrowing cost capitalized.