This thesis analyzes some aspects of the Basel III Accord, from the Bank for International Settlements (BIS) and their applications on three different situations in the Brazilian market. First, we analyze whether two main recommendations, minimum capital requirements and the use of Stressed VaR, would mitigate the effects of the Brazilian pre-election crisis in 2002 if they were already implemented. We innovate in three situations: using the VIX as a volatility alternative (proxy) for stress scenarios when no historical data is available; modeling financial time series with SWGARCH and alpha-stable innovations (according to BRODA et al., 2013) and analyzing Market Risk with two approaches simultaneously: the Early Warning, from the International Monetary Fund (IMF) and the Capital Requirements (BIS). Second, we discuss a supposed dichotomy in banking regulation: the simultaneity of liquidity risk regulation versus the lender of last resort institute. We rebate this dichotomy and innovate both by demonstrating that perpetual call options may offer a theoretically feasible alternative or complement to capital requirements; and by identifying that the Brazilian liquidity index is a random walk process, meaning a constant effort to keep this index at a safer level. Third, focusing a well known kind of crisis, we innovate by evaluating if the real estate market risk could be mitigated with the development of abandon real options with volatility regime-switching risk, simulated from the monthly returns of the real estate selling prices listed in the FIPE-ZAP index.