SignaturePLUS Membership

For $1750 per year, receive all the benefits of Signature membership, plus support on legal issues.

Direct Legal Consultation

Direct Legal Consultation

Access up to 10 hours of legal services from expert attorneys who can assess compliance risks, review policies and documents, and clarify complex legal issues in areas such as self-dealing, fundraising, and international grantmaking.

Legal Insights Newsletter

Legal Insights Newsletter

Receive exclusive quarterly updates on legal and regulatory trends impacting philanthropy and nonprofits.

Enjoy all the benefits of Signature Membership too.

Enjoy all the benefits of Signature Membership too.


How it works


  1. Submit your question to Exponent Philanthropy through our member Q&A service by calling 202-580-6560 or emailing info@exponentphilanthropy.org.
  2. Staff experts will field all questions. When a legal question is beyond the scope of Exponent Philanthropy’s internal resources, SignaturePLUS member questions are passed to our legal partner, who will respond directly to you within three business days, potentially sooner, based on the volume of questions.
  3. Our legal partner will answer questions based on their general knowledge. If your questions require additional research, you will be notified, and the additional hours needed for research will be applied to your 10-hour allotment.

Please note:

  • If a question is determined to be beyond the scope of the service agreement, we will encourage you to engage with your own legal counsel.
  • The service will generally be based on United States federal tax law, as interpreted by the courts and the Internal Revenue Service.
  • Our legal partner will provide you with guidance on your situation, but, depending on the complexity of the issue, you may still need to discuss the issue with your own lawyer.
  • Members can seek to contract directly with our legal partner separate from their membership; the legal partner’s typical fees would apply and they may not be able to represent you depending on your issue.

Legal Partner


We contract with Arnold & Porter to provide legal services for SignaturePLUS members. Our main contact is Andras Kosaras, who represents domestic and international tax-exempt organizations on a broad range of regulatory, transactional, and operational matters. Members benefit from his and the entire Arnold & Porter team’s knowledge and expertise in the laws that govern foundations and charitable giving. 

Andras advises a broad range of exempt organizations, including public charities, private foundations, medical research organizations, donor advised funds, supporting organizations, community foundations, and fiscal sponsors. Additionally, he represents individuals and corporate donors on charitable giving. Andras also works with the firm’s legislative team to monitor and provide advice on legislative and regulatory tax proposals affecting tax-exempt organizations. He regularly speaks at programs for tax-exempt organizations.


Contact us for more information