Introduction
Provisioning becomes more dependent on security cover and asset ageing after an NPA enters the Doubtful category.
For a normal Substandard Asset, provision is generally calculated on the total outstanding without first deducting available security. The treatment changes for a Doubtful Asset.
For Doubtful Assets, the exposure is divided into:
secured portion, supported by realistic realisable value of security to which the bank has valid recourse; and
unsecured portion, which is not covered by such security.
The unsecured portion attracts 100% provision. The secured portion attracts 25%, 40% or 100% provision, depending on how long the asset has remained Doubtful. A Loss Asset should be written off; if retained in the books, 100% of the outstanding must be provided.
The 2026 IIBF BFM syllabus includes Asset Classification and Provisioning Norms under Module D.
Learning Objectives
After studying this topic, you should be able to:
split a Doubtful Asset into secured and unsecured portions;
apply the correct provision according to Doubtful ageing;
calculate the total required provision using realistic security value;
identify the 100% provisioning requirement for Loss Assets;
handle ECGC and specified credit-guarantee cover correctly; and
avoid common CAIIB numerical errors involving security and ageing.
Core Provisioning Logic
The correct sequence for a Doubtful Asset is:
Outstanding → Determine Realisable Security → Split Secured and Unsecured Portions → Apply 100% to Unsecured Portion → Apply Age-Based Rate to Secured Portion → Add Both Provisions
This is different from Substandard provisioning.
Asset | Importance of Security for Basic Provision |
|---|---|
Substandard | Normal 15% provision is on total outstanding without allowance for available security |
Doubtful | Split into secured and unsecured portions |
Loss | 100% of outstanding if retained in books |
RBI specifically requires Doubtful provisioning to consider both the realisable value of security and the period for which the asset has remained Doubtful.
Doubtful Asset – Unsecured Portion
RBI requires 100% provision for the part of a Doubtful advance that is not covered by the realisable value of security to which the bank has valid recourse. The realisable value must be estimated realistically.
Unsecured Portion = Outstanding − Eligible Realisable Value of Security
This identifies the portion of the Doubtful exposure not supported by realisable security.
Refer to the Formula Section for a detailed explanation, variables, and solved examples.
The provision on this unsecured portion is:
Provision on Unsecured Portion = Unsecured Portion × 100%
This provides fully for the exposure not supported by eligible security.
Refer to the Formula Section for a detailed explanation, variables, and solved examples.
Therefore, once an amount is identified as the unsecured portion of a Doubtful Asset, its age in the Doubtful category does not reduce the 100% provisioning requirement.
Doubtful Asset – Secured Portion
The secured portion is the part of the outstanding supported by the realistic realisable value of security to which the bank has valid recourse.
Provisioning on that portion depends on the period for which the asset has remained Doubtful.
Period in Doubtful Category | Provision on Secured Portion |
|---|---|
Up to 1 year | 25% |
More than 1 year and up to 3 years | 40% |
More than 3 years | 100% |
These are the current RBI rates for commercial banks under the applicable IRAC framework.
Provision on Secured Portion = Secured Portion × Applicable Doubtful Rate
This applies the age-based RBI rate to the security-covered part of the exposure.
Refer to the Formula Section for a detailed explanation, variables, and solved examples.
Total Provision for a Doubtful Asset
The total requirement combines both components:
Total Doubtful Provision = 100% of Unsecured Portion + Applicable Provision on Secured Portion
This combines full provisioning for the unsecured portion with age-based provisioning for the secured portion.
Refer to the Formula Section for a detailed explanation, variables, and solved examples.
This single relationship is central to most CAIIB numericals on Doubtful Asset provisioning.
Numerical Working Table
For CAIIB calculations, use a simple working format:
Component | Treatment |
|---|---|
Total outstanding | Start with applicable exposure |
Eligible realisable security | Determine realistic security value |
Unsecured portion | Outstanding minus eligible security |
Provision on unsecured portion | 100% |
Secured portion | Amount supported by eligible security |
Rate on secured portion | 25%, 40% or 100% according to Doubtful ageing |
Total provision | Unsecured provision + secured provision |
This structure prevents most calculation errors.
Security Value Must Be Realisable, Not Merely Book Value
A common numerical trap is to use the value written in an old valuation report without considering whether that amount represents current realisable value.
RBI requires provisioning to use realistic realisable security value.
Therefore, if a question gives:
original cost of property;
earlier valuation;
current market value; and
current realisable value,
the regulatory calculation should focus on the value relevant under the question and RBI provisioning rule, not automatically on historical cost.
Market Value and Realisable Value
Market value and realisable value may not always be identical.
Realisable value may reflect what the bank can reasonably expect to recover through enforcement or sale.
For numerical purposes, if the question expressly gives realisable value, that figure is normally the key security amount.
Security Cannot Exceed the Exposure for the Basic Split
If eligible realisable security value exceeds the outstanding exposure, the secured portion for the provisioning calculation cannot economically exceed the exposure itself.
The basic secured/unsecured split should therefore be limited to the amount actually outstanding.
A surplus security value does not create a negative unsecured portion or reduce the required provision below the prescribed rate on the exposure.
Security Must Be Available to the Bank
The security used for determining the secured portion must be security to which the bank has valid recourse.
A valuable asset owned by the borrower is not automatically eligible security merely because it exists.
Ask whether:
the asset is properly charged to the bank;
the charge is legally enforceable;
the bank has valid recourse;
the security is identifiable; and
its realisable value can reasonably be determined.
This distinction is important where CAIIB questions provide both the borrower’s total assets and the securities actually charged to the bank.
Valuation Requirements for Large NPAs
RBI requires stronger valuation controls for larger NPAs.
For NPAs with a balance of ₹5 crore and above, stock audit at annual intervals by external agencies appointed under Board-approved guidelines is mandatory to improve reliability of stock valuation.
Collateral such as immovable property charged to the bank should be valued once in three years by valuers appointed under Board-approved guidelines.
These requirements matter because an overstated security value produces an understated provision.
The relationship is:
Overstated Security → Overstated Secured Portion → Understated Unsecured Portion → Potential Under-Provisioning
Doubtful Ageing
Do not confuse:
period as NPA; and
period in the Doubtful category.
The 25%, 40% and 100% rates are based on the period for which the asset has remained Doubtful.
Ageing Structure
After an account completes the applicable Substandard period and becomes Doubtful:
up to one year in Doubtful → 25% on secured portion;
more than one year and up to three years → 40%; and
more than three years → 100%.
The unsecured portion remains at 100% throughout.
When Doubtful Provision Becomes 100%
If an asset has remained Doubtful for more than three years, both components effectively attract 100%:
unsecured portion → 100%;
secured portion → 100%.
Therefore, total provisioning reaches 100% of the exposure, even though security may still exist.
This is an important numerical shortcut, but use it only after correctly identifying that the account has remained in the Doubtful category for more than three years.
Loss Asset Provisioning
A Loss Asset represents a much more severe situation.
RBI requires Loss Assets to be written off.
If a Loss Asset remains in the books for any reason, the bank must make a provision equal to 100% of the outstanding.
Loss Asset Provision = Outstanding × 100%
This provides fully against a Loss Asset retained in the books.
Refer to the Formula Section for a detailed explanation, variables, and solved examples.
Security Does Not Reduce the Basic Loss Provision
Once the exposure is classified as Loss and remains in the books, the calculation is not:
Outstanding − Security Value → provision on balance.
The requirement is 100% of outstanding.
Possible salvage or recovery value does not turn the Loss Asset into a partially provided asset under the normal rule.
Doubtful vs Loss Provisioning
Basis | Doubtful Asset | Loss Asset |
|---|---|---|
Security split required | Yes | Not for basic 100% provision |
Unsecured portion | 100% | 100% of entire outstanding |
Secured portion | 25%, 40% or 100% based on age | 100% |
Security valuation | Very important | Does not reduce basic 100% requirement |
Write-off expectation | Not automatically | Should be written off |
If retained in books | Provision as per Doubtful rules | 100% provision |
Security Erosion and Direct Classification
Security is relevant not only for provisioning but can also affect asset classification where erosion becomes severe.
Where recovery is seriously threatened because security value has substantially deteriorated, RBI allows the normal ageing sequence to be bypassed.
In particular, significant security erosion can lead to direct Doubtful classification, while extremely severe erosion can lead to direct Loss classification.
This matters numerically because the classification must be correct before the provisioning percentage is selected.
A learner who incorrectly keeps such an account in Substandard may apply 15% when the correct provision could be much higher.
Interest Suspense Account
RBI specifies that amounts held in the Interest Suspense Account are not to be treated as provisions.
Such amounts should first be deducted from the related advance, and provisioning should then be calculated on the balance according to applicable norms.
This can be important where a numerical gives:
gross outstanding;
interest suspense; and
security value.
Do not add Interest Suspense to the provision already required.
Follow the applicable treatment before determining the provisioning base.
ECGC-Guaranteed Doubtful Advances
RBI provides special provisioning treatment for Doubtful advances guaranteed by ECGC.
Provision is required only for the balance in excess of the amount guaranteed by ECGC.
For the calculation, RBI requires the realisable value of securities to be deducted first from the outstanding. Guarantee cover is then applied to the remaining amount, and provision is calculated on the residual uncovered exposure along with the applicable provision on the secured portion.
The broad sequence is:
Outstanding → Deduct Realisable Security → Determine Unsecured Balance → Apply Eligible ECGC Cover → Determine Uncovered Unsecured Portion → 100% Provision on Uncovered Portion + Age-Based Provision on Secured Portion
This sequencing is important.
CGTMSE, CRGFTLIH and NCGTC Guarantee Cover
RBI also provides special treatment for advances covered by eligible schemes or guarantees launched by:
CGTMSE;
CRGFTLIH; and
NCGTC.
Where such an advance becomes NPA, no provision is required against the eligible guaranteed portion. The amount outstanding beyond the guaranteed portion is provided according to the applicable NPA norms.
For a Doubtful Asset, this means the numerical may require separate identification of:
secured portion;
guaranteed portion;
uncovered unsecured portion; and
applicable Doubtful-ageing rate.
Do not treat a guarantee and tangible security as the same thing.
Guarantee Is Not Automatically Tangible Security
For determining an unsecured exposure under RBI norms, “security” refers to tangible security properly charged to the bank. Intangible support such as guarantees, including State Government guarantees, and comfort letters is not treated as tangible security for that definition.
At the same time, specified guarantee schemes such as ECGC or CGTMSE can receive separate provisioning treatment where RBI expressly permits it.
Therefore:
Tangible Security Cover ≠ Guarantee Cover
Both may reduce regulatory loss exposure in particular circumstances, but they enter the calculation through different rules.
Country-Risk Provision and 100% Ceiling
Where country-risk provisioning is applicable, it is generally additional to the provision required according to asset classification.
However, RBI provides that for Doubtful and Loss Assets, total provision including country-risk provision should not exceed 100% of the outstanding.
This is useful where a numerical includes both:
NPA provision; and
additional country-risk provision.
Do not create total provisioning greater than 100% merely by mechanically adding percentages.
Calculation Framework for CAIIB
Use this sequence in numerical questions.
Step 1: Identify the Asset Classification
Is the exposure:
Doubtful; or
Loss?
Step 2: If Doubtful, Determine Age
Identify the period for which the account has remained in the Doubtful category.
Select:
25%;
40%; or
100%
for the secured portion.
Step 3: Determine the Correct Provisioning Base
Check whether any regulatory adjustment such as Interest Suspense must first be considered.
Step 4: Determine Realisable Security
Use only realistic eligible security to which the bank has valid recourse.
Step 5: Split the Exposure
Identify:
secured portion; and
unsecured portion.
Step 6: Apply Provision Rates
Apply:
100% to unsecured portion; and
the applicable age-based percentage to secured portion.
Step 7: Check Guarantee Cover
If ECGC, CGTMSE, CRGFTLIH or NCGTC cover is specifically given, apply the applicable special RBI treatment.
Step 8: Aggregate
Add all required components.
For a Loss Asset, use the applicable 100% provision on outstanding if it has not been written off.
Practical Banking Application
Assume a bank reviews several NPAs at year-end.
For a Doubtful account, the credit officer should not merely apply one percentage to the outstanding.
The bank must establish:
correct Doubtful ageing;
latest realistic security value;
enforceability of the charge;
unsecured balance;
applicable guarantee cover; and
required provision on each component.
For a Loss Asset, management should consider write-off in accordance with applicable policy and approvals. If it remains in the books, full provision is required.
Accurate security valuation therefore has a direct impact on:
bank profit;
Net NPA;
provisioning coverage;
capital position; and
reported asset quality.
CAIIB Exam Focus
1. Unsecured Portion of Doubtful Asset = 100%
This remains true irrespective of whether the asset has been Doubtful for less than or more than one year.
2. Secured Portion Uses 25–40–100
Remember:
up to 1 year → 25%
more than 1 year to 3 years → 40%
more than 3 years → 100%.
3. Use Period in Doubtful Category
Do not select the rate merely from the total time for which the account has been NPA.
4. Security Means Realisable Security
Do not blindly use original cost, old valuation or borrower net worth.
5. Doubtful Provision Has Two Parts
Unsecured provision + Secured provision
Calculate both.
6. Loss Asset Requires 100%
If retained in the books, provide 100% of outstanding.
7. Guarantee and Security Are Different
Apply special guarantee-cover treatment only where RBI specifically permits it.
8. Interest Suspense Is Not a Provision
Apply the prescribed adjustment rather than adding it to required provision.
9. Provision Cannot Exceed 100% Merely through Additional Country-Risk Provision
RBI caps the combined amount at the outstanding for Doubtful and Loss Assets.
Common Exam Traps
Trap 1: Applying 25%, 40% or 100% to the Entire Doubtful Outstanding
Wrong where part of the exposure is unsecured.
The unsecured portion first requires 100% provision.
Trap 2: Applying 100% Only to the Unsecured Portion of a Loss Asset
Wrong. A Loss Asset retained in the books requires 100% provision on the entire outstanding.
Trap 3: Using Security Value without Checking Realisability
Wrong. Provisioning is based on realistic realisable security value to which the bank has valid recourse.
Trap 4: Using Total NPA Age to Select the Doubtful Rate
Wrong. The relevant rate depends on time spent in the Doubtful category.
Trap 5: Treating a Guarantee as Tangible Security
Wrong. Guarantee cover and tangible collateral follow different regulatory treatments.
Trap 6: Applying ECGC Cover Directly to Total Outstanding
Wrong. Follow RBI’s prescribed sequence involving security and the uncovered balance.
Trap 7: Counting Interest Suspense as Provision
Wrong. Interest Suspense is not itself a regulatory provision.
Trap 8: Believing Security Eliminates Provision
Wrong. Even the secured portion of a Doubtful Asset attracts 25%, 40% or 100% provision according to ageing.
Memory Technique
Remember:
U = 100 always
For a Doubtful Asset:
Unsecured portion → 100%
For the secured portion, remember:
1 – 25 | 3 – 40 | Beyond 3 – 100
Up to 1 year → 25%
More than 1 and up to 3 years → 40%
More than 3 years → 100%
For Loss Assets:
Loss = Full Loss Cushion = 100%
The calculation sequence is:
Outstanding → Security → Split → Age → Rate → Add