The outstanding balance of our consolidated total borrowings and total cash and cash equivalents - as defined under our 2017 Amended Senior Credit Facility ("net covenant leverage") - resulted in a Net Total Debt to Consolidated Annualized EBITDA ratio of 3.2x at December 31, 2017 (December 31, 2016: 3.5x). As per our 2017 Amended Senior Credit Facility, the Consolidated Annualized EBITDA includes certain unrealized OPEX synergies with regards to both the BASE and SFR Belux acquisitions, while Net Total Debt excludes both lease-related liabilities and vendor financing-related short-term liabilities. Our current net covenant leverage ratio is significantly below the springing maintenance covenant of 6.0x and the incurrence test of 4.5x net senior leverage. Excluding the aforementioned unrealized OPEX synergies and including all other short-term and long-term liabilities on our balance sheet, our net total leverage ratio as per December 31, 2017 reached 3.9x.
The board of directors has decided to redefine the Company's leverage framework, maintained at 3.5x to 4.5x Net Total Debt to Consolidated Annualized EBITDA. Going forward, the newly defined leverage framework will be based on net total leverage as opposed to net covenant leverage currently. At 3.9x net total leverage at December 31, 2017, the Company remains within the mid-point of the range.
Given the Company's strong delivery towards its 2015-2018 rebased Adjusted EBITDA outlook, the board of directors acknowledges the Company's potential deleveraging profile. The board of directors has considered different forms of shareholder remuneration in view of the Company's full year results, balance sheet and leverage framework, but has for now not decided on any other form of distribution with the exception of the Share Repurchase Program 2018 as mentioned below. The board of directors will continue to assess potential shareholder distributions throughout the course of the year, as mentioned above.
Net total leverage is defined as the sum of all of the Company's short-term and long-term liabilities minus cash and cash equivalents ("Net Total Debt"), as recorded in the Company's statement of financial position, divided by the last two quarters' Consolidated Annualized EBITDA.
Net covenant leverage is calculated as per the 2017 Amended Senior Credit Facility definition, using Net Total Debt, excluding (i) subordinated shareholder loans, (ii) capitalized elements of indebtedness under the Clientele and Annuity Fees, (iii) any finance leases entered into on or prior to August 1, 2007, (iv) any indebtedness incurred under the network lease entered into with the pure intermunicipalities and (v) any vendor financing-related liabilities, divided by last two quarter's Consolidated Annualized EBITDA including certain unrealized cost synergies related to the BASE and SFR Belux acquisitions.