Also known as Cardiac Catheter Ablation Catheter ablation is a procedure that uses energy to make small scars in your heart tissue to prevent abnormal electrical signals from moving through your heart.
However, for any tax year, all current-year contributions are deducted first. The second 50% limitation refers to gifts (other than capital gain property) to certain types of charitable organizations (50% charities) that are considered first in computing the overall 50% limit.
Contribution Limits. As a general rule, the IRS allows you to deduct contributions to charitable organizations up to 50 percent of your AGI. Any excess donations you make can be carried forward to the next tax year. For example, say your AGI is $50,000 and you made $27,000 in donations.