Many of us volunteer our time with nonprofit organizations as a way of giving back to the community. Whether we're cleaning parks, planting trees or walking dogs at the animal shelter, we know giving time can make a difference. But did you know your actions are also tax-deductible? If you drive to volunteer, you can deduct 14 cents a mile and include tolls and parking. Using public transportation? Your fare is also fully tax-deductible. Photocopies, treats for shelter dogs, postage and art supplies are also deductible. Just make sure the organization is a registered 501(c)(3) charity in order to take advantage of the savings.