Summary
If you make 8,421,140 LL a year living in Lebanon, you will be taxed 590,646 LL. That means that your net pay will be 7,830,494 LL per year, or 652,541 LL per month. Your average tax rate is 7.0% and your marginal tax rate is 8.3%. This marginal tax rate means that your immediate additional income will be taxed at this rate. For instance, an increase of 100 LL in your salary will be taxed 8.31 LL, hence, your net pay will only increase by 91.69 LL.
Bonus Example
A 1,000 LL bonus will generate an extra 917 LL of net incomes. A 5,000 LL bonus will generate an extra 4,585 LL of net incomes.