At the end of 2013, Dollar Tree's debt level increased by $498,500, a change of 185.75%. Of course, this change resulted in a lower ratio 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 late 2013 levels, Dollar Tree still appears very liquid and solvent. Dollar Tree's current and quick ratios are in a good position at the end of 2015; a substantial improvement over year-end 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 late 2013 levels (20.05 times versus 12.71 times). This improvement can be attributed to the fact that Dollar General was able to reduce its interest expense and increase its pre-tax profit during the period..