Global banking regulators have published a couple of reports that highlight efforts to ensure consistent implementation of new capital rules.

The Basel Committee on Banking Supervision Wednesday published two reports — one which provides an update on the implementation of the new Basel III capital rules, and another setting out measures to reduce excessive variability — which were prepared for the upcoming G20 Leaders’ Summit in Brisbane.

The progress report on the adoption of the Basel III capital rules finds that the work on implementation is “fostering harmonization of capital regulations” across jurisdictions. It also notes that all countries have now implemented risk-based capital regulations and that efforts are now under way to adopt Basel III regulations for liquidity and leverage ratios, and for both global and domestic systemically important banks (G-SIBs and D-SIBs).

The report on the use of national discretion in implementing Basel standards is aimed at fostering transparency on the differences in implementation across member jurisdictions, the committee notes.

“All committee member jurisdictions have adopted the Basel III risk-based capital regulations, and most are well on the way to implementing the liquidity coverage ratio. Informed by the committee’s monitoring of the Basel standards, we are targeting our policy responses at excessive variability in banks’ internal measures of risk-weighted assets,” said Stefan Ingves, chairman of the Basel Committee and governor of Sveriges Riksbank.

Among other things, the Basel Committee is revising the capital framework’s standardized measurement approaches, which will form the basis for a capital floor. In October, it proposed revisions to the standardized approach for measuring operational risk, and by the end of the year it aims to publish proposed revisions to the standardized approach for credit risk as well as a proposed capital floor.

In previous reports, regulators have observed “excessive variability” in banks’ regulatory capital ratios, which isn’t simply based on differences in the riskiness of their portfolios. Instead, that variability is due to apparent disparities in regulators’ approaches to implementation.

The second report published Wednesday explains that the Basel Committee is developing specific policy proposals to reduce excessive variability arising from banks’ risk modelling practices. “The modifications under consideration will narrow the modelling choices available to banks, particularly in areas which by their nature are not amenable to modelling, and will serve to increase consistency and reduce complexity,” it says.

Additionally, the committee is assessing whether the advanced approach to measuring operational risk needs to be simplified. It intends to finalize this work by the end of 2015.