As of year-end 2013, Dollar Tree's debt level grew by $498,500, a change of 185.75%. This change, of course, caused the ratio to decrease because the denominator of the formula (LT + ST debt) was now much larger than before. Although Dollar Tree's TIE ratio and free cash flow-to-debt ratios have declined from year-end 2013 levels, Dollar Tree still appears very liquid and solvent. Dollar Tree's current and quick ratios are in good standing as of year-end 2015; a substantial improvement from late 2014 levels. Compared to the industry average, Dollar Tree's current ratio of 2.31 is much better than the industry average of 0.94. Likewise, Dollar Tree's quick ratio of 10 is much better than the industry average of 0.19. The TIE ratio is comparable to the industry average. Dollar General: Dollar General seems much more stable than Dollar Tree. All of Dollar Genera's ratios appear to be fairly consistent over time. It appears that the TIE ratio has increased decently from year-end 2013 levels (20.05x vs. 12.71x). This improvement can be attributed to the fact that Dollar General was able to reduce its interest expenses and increase its pre-tax earnings over the time period