The unlimited marital estate tax deduction allows you to transfer an unlimited amount of wealth and assets to your spouse when you pass away. The unlimited marital deduction can be important in estate planning, as you can make strategic plans to transfer assets to your spouse and to combine the amount of wealth you can leave to your loved ones without being taxed. You can each pass on $5.45 million in assets (as of 2016) without incurring taxes, and if one of you leaves your entire estate to the other, you can combine your exclusions. The last surviving spouse can thus pass on $10.9 million without paying estate taxes. Find out more here about how the unlimited marital estate tax deduction works and how it can help you avoid estate taxes.