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Israel Tannenbaum


New York, NY

Member Since March 2022


Not for Profit
Private Foundations


Over a decade of experience serving not-for-profit clients in a range of sub-sectors, specializing in delivering insightful, comprehensive tax services. Particularly adept with Forms 990, 990-PF, 990-T, 926, 8865, 5500 and any relevant state forms, including Form CHAR500 and CT-13, to clients including many Fortune 100 companies and large pension trusts. Significant experience assisting clients with implementation of the requirements of various new legislation and regulations such as the New York State Not for Profit Revitalization Act and the 2014 IRS Final Tangible Property Regulations Certified Public Accountant in New York State, and a member of the American Institute of Certified Public Accountants and the New York State Society of CPAs, where I sit on the Not-for-Profit Organizations, and Exempt Organizations Committees.

Published content

15 Effective Ways to Encourage And Foster Innovation in Your Business

expert panel

While failure does come with significant downsides, actively encouraging employees to take risks can be worthwhile. “Failure” has a complex meaning in business. On one hand, failure can mean unimaginable loss ranging from the waste of limited resources to the loss of one’s livelihood completely. On the other hand, failure can also be a harbinger for great personal and professional growth.  No matter how one feels about failure, the truth of the matter is that business is all about leveraging the lessons that come out of failure to innovate. Taking risks, building on failure and encouraging your employees to do the same is the key to becoming a major player in your market.  As experts, the members of Newsweek Expert Forum have directly experienced the benefits of cultivating a workplace environment that supports experimentation. Below, 15 of them share how leaders can encourage and foster a culture of innovation within their organization.

How AI Can Help Not-For-Profits Do More With Less


Let's explore a few ideas for how your organization can leverage this new tech.

13 Key Ways Organizations Can Improve Their Managers’ Effectiveness

expert panel

By providing ongoing support, leadership can ensure that a manager has the tool and resources to succeed. Great managers are critical to the success of an organization. These managers sometimes step into the role already possessing innate traits and experiences that will help them succeed as leaders, but management as a skill should also be taught. If an organization builds systems to develop and shape the skills of their talent on an ongoing basis, leadership decreases the chances of creating and perpetuating bad management behaviors that negatively impact the culture and operations of the business.  To help leaders ensure managers are performing at their best, 13 Newsweek Expert Forum members share specific actions they can take to increase the effectiveness of their managers.

14 Effective Strategies for Connecting With Peers Without Comparing Your Successes

expert panel

Having a deep understanding of yourself and your own goals can help prevent feelings of inadequacy. From Instagram and Twitter to now even LinkedIn, having a presence online today means constantly reading about what everyone has going on. This includes the life updates that people typically post but social media has also increased people’s tendency to primarily share the highlights rather than the entire picture. While this is not a bad thing on its own, constantly viewing the success of your peers can amplify your own feelings of inadequacy around personal and professional failures. Simply deciding to take a step back is one approach to consider, but it can negatively impact your relationships with peers over time. Below, 14 Newsweek Expert Forum members share recommendations for how professionals can connect and maintain healthy relationships with peers without comparing themselves to others’ success and accomplishments.

How Businesses Can Build Systems to Support First-Time Leaders

expert panel

To set first-time leaders up for success, organizations have to create processes that offer support and flexibility. Whether a first-time leader has been promoted or is newly hired into the organization, the systems a business has in place are critical for that leader to overcome the obstacles they will inevitably face. As experts, the members of Newsweek Expert Forum are familiar with business procedures that can help new leaders feel supported. Read on as 13 of them offer recommendations on what organizations should do to build systems that help first-time leaders succeed in their roles.

How to Keep Purpose at the Forefront of Your Business

expert panel

In order to keep moving toward set goals, leaders must ensure that the organization's purpose is prioritized. In life, the only constant is change, and the same is true in business as well. While businesses are typically created around a vision or specific purpose, the evolving reality of running a business can cause leaders to gradually stray from the original mission. Purpose-driven organizations do work that benefits stakeholders on all sides, so having a guide when making decisions can help leaders manage change better and more efficiently. To ensure that their organizations remain focused on their mission, 15 Newsweek Expert Forum members offer advice on how industry leaders can keep purpose at the forefront of everything they do.

Company details


Company bio

Withum is a forward-thinking, technology-driven advisory and accounting firm, helping clients to Be in a Position of Strength in today’s modern business landscape. Visit for more information. #WithumWay



Area of focus

Certified Public Accountants and Consultants
Forensic and Valuation
Private Client Services

Company size

1,001 - 5,000