55.5. Interest rate risk in the banking portfolio (ALM Treasury)
The banking book of BNP Paribas Bank Polska S.A. is composed of two parts: the first one is the ALM portfolio as part of which
structural interest rate, currency and liquidity risks resulting from the structure of the statement of financial position determined by
the core lending, deposit and investing operations of the Bank, are managed. On the other hand, the Treasury portfolio is subject
to daily and short-term liquidity management. It is also used by the Bank for purposes of performing its investing activities as well
as concluding hedging transactions on the financial market.
The ALM portfolio comprises accounts, deposits and loans, strategic items (long-term investments, own debt issues and long-term
loans), financial market transactions hedging the portfolio (derivative instruments) and zero-interest items (to include equity,
tangible assets, intangible assets, taxes and provisions and profit for the period), transferred under management of ALM Treasury
through the Fund Transfer Pricing (FTP) system.
The Treasury portfolio includes liquid securities (liquidity buffer), interbank deposits and placements, nostro and loro accounts as
well as financial market transactions hedging the market risk of the portfolio (derivative instruments).
The Bank’s policy in respect of the banking book – ALM and Treasury portfolios managed collectively – is to earn additional, stable
revenue in excess of the product margin, without any threat to the stability of funds deposited by customers, equity and profit.
The above mentioned objective is accomplished by the Bank by maintaining or matching its natural exposure generated by the core
lending and deposit operations, in line with the adopted risk limits which guarantee limited sensitivity of the Bank’s profit to changes
in market factors, in addition to bringing the exposure into line with financial market trends forecast in the medium and long term.
Competitive conditions of the local financial market and customer expectations are the main factors shaping the Bank's product
policy, in particular the application of variable interest rates for medium- and long-term credit products, and financing of these
assets with short deposits and interest-free accounts.
The real interest rate gap, net interest income sensitivity and economic capital sensitivity are the key measures of the market risk
in the banking book, which comprises the ALM portfolio and the Treasury portfolio.
The major assumptions adopted for measurement of interest rate risk in banking book are as follows:
a) individual assets, liabilities and off-balance sheet transactions are analysed at their nominal value which is used as the basis
for calculation of interest;
b) items and transactions based on floating reference rates, such as WIBOR, NBP rediscount rate etc. are taken into account for
purposes of determining the gap at the nearest repricing date for a given contract;
c) items based on floating reference rates scaled with a multiplier are taken into account for purposes of determining the gap at
the nearest repricing date for a given contract at nominal value scaled with a multiplier and the nominal amount scaled with a value
(1 – multiplier) is considered at the maturity date or proportionally at the principal payment dates;
d) fixed rate items and transactions are taken into account for purposes of determining the gap at the principal payment dates, at
the amounts of the principal paid at a given date or at the full amount at the maturity date for items in case of which the principal
is not repaid (e.g. term deposits). Items and transactions with unspecified maturity, repricing date or non-interest bearing are taken
into account in line with the profile determined as a result of modelling, which is aimed to ensure the best possible reflection of
the changes in interest and principal cash flows resulting from customer behaviours and in response to external factors, in particular
the market interest rates.
e) for the portfolio of impaired loans - for net values (decreased by the created reserves) - the average contractual maturity for
unimpaired exposures (IFRS stage 1 and 2) increased by two years is applied,
f) economic capital is calculated based on positions at internal prices.
As part of interest rate risk management in the banking portfolio, the Bank distinguishes structural elements consisting of interest-
free current accounts and the Bank's capital as well as other commercial items. In terms of structural elements, the Bank secures
a significant portion of them by long-term positions (bonds, interest rate exchange transactions). Regarding other commercial
items, the Bank plans to reduce interest rate risk.
For interest rate risk models, the Bank uses the provisions of the 'W' Recommendation regarding verification of the model's
operation, qualitative criteria, minimum model acceptance criteria and ongoing control of the model's accuracy.
Replication portfolio models for accounts with no specific maturity dates are behavioural models built on the basis of the historical
variability of deposit account balances and the analysis of the closing ratios for the modelled position. As part of modelling, the
portfolio is divided into the stable parts and a variable part, which is assigned the symbol ON in interest rate analyses. The stable
part is divided into a part that is insensitive to interest rate changes (the structural part) and a part sensitive to interest rate changes
(the unstructured part). A long-term interest rate repricing profile is determined for the structural part, while for the non-structural
part it depends on the current macroeconomic situation and forecasts of the behaviour of interest rates for individual currencies.
As regards loans with a fixed interest rate, prepayment ratios determined in accordance with the applicable models at the Bank
are used. Prepayments are analysed separately for individual types of loans (cash, car), due to the different characteristics of
these products. Factors included in the prepayment analysis: loan age, seasonality, financial incentive for the customer to prepay
the loan.