Calcium and Dairy. Foods classified by the USDA as dairy products supply calcium to the diet. Calcium is stored in your bones, which makes them dense. Too little calcium in your diet can increase your risk of developing low bone density and fractures.
For example, say that your traditional IRA has a cost basis of $30,000 and is worth $100,000 when you take a $10,000 withdrawal. That means 30 percent of the withdrawal comes out of your cost basis and is tax-free; 70 percent comes from the remainder of the account and is taxable.
Roth IRAs With Basis. Cost basis for Roth IRAs only matters when you're taking an early withdrawal. If you do cash out money early, it all comes out of your cost basis first, rather than being prorated like a traditional IRA distribution. For example, say that your Roth IRA has a cost basis of $30,000 and is worth $100,000 when you take a $10,000 early withdrawal. The entire $10,000 comes out as a tax-free distribution, reducing your remaining cost basis to $20,000.