We work with you on a personal level to determine the best solutions for your unique needs, then leverage our seasoned expertise to achieve the best possible results.


We are your trusted partner in success. Our firm is large enough to offer a full range of professional services at a fair price but small enough to give you the individual attention that you deserve.


Rest assured that when a need arises, our firm is ready and capable to handle everything for you so you can focus on what matters most to you.

Staff Profiles

Nelson B. Spells, CRTP

Landline Phone: (626) 332-5225

Nelson B Spells is the President and founder of NBS Tax Services. His more than 40 years of experience in tax preparation and negotiation, mediation and tax resolution has led him to be a leader in the industry. Nelson’s passion to ensure his clients are furnished with outstanding customer service led to his tag line “You’ll be impressed with NBS.” He is an expert in not only tax preparation for individuals but corporate, partnerships and trust clients as well. Nelson is a Certified Registered Tax Professional and Tax & Business Consultant. His vast experience and knowledge of tax codes and laws has given Nelson the opportunity to successfully negotiate complex tax problems. In addition to taxes, Nelson furnishes, payroll and accounting support for his clients. If a client wants to start a new business, they turn to Nelson for his expertise to get them started. His clients have come to depend and count on Nelson for all their tax preparation individual and corporate, new startup businesses, accounting, payroll and all tax problems and concerns.

Nelson has trained many tax preparers and enrolled agents over the years. He gives back to the community through volunteering for outside training of college students in tax preparation.

Keishawn Spells, Marketing Manager

Landline Phone: (626) 332-5225

Keishawn Spells is the Marketing Manager. She has a BS in Management/Marketing from University of Phoenix. As the Marketing Director she is responsible for developing marketing programs and financial brand management. In addition, she leads the strategic business development. One of her greatest strengths is her creativity, drive and leadership. Keishawn thrives on challenges particularly those that expand our company’s reach to new clients. She continues to develop on going strategies that expand our marketability in the industry.

Victoria Tadang, E.A.

Enrolled Agent
Landline Phone: (626) 332-5225

Victoria Tadang is a tax professional and an Enrolled Agent, with more than 15 years of experience. She is currently a member of ASTPS (American Society of Tax Problem Solvers). At NBS Tax Services, a Southern California business specializing in tax preparation, IRS representation and tax resolution Victoria has assisted individuals, families, and businesses, and other organizations to navigate the complex US Tax Code. Being an Enrolled Agent has given Victoria the opportunity to use her vast experience and education to negotiate tax resolution issues for her clients with the IRS. Due to her many years of experience, Victoria has become a leader in her field of resolving complex and complicated tax problems. She continues to represent her clients/taxpayers with the IRS and negotiate the best possible resolution.

Toni Corbitt, Director of Operations

Landline Phone: (626) 332-5225

Toni Corbitt is the Director of Operations. She has an MBA with an emphasis in management. She also has a certification in contracting law from UCLA. In addition to this extensive education Toni has over 29 years in management of large teams. She worked at Boeing, McDonnell Douglas, and Rockwell. During her time with these companies, she also led mentoring teams encouraging women to pursue their career dreams. Toni sponsored numerous small businesses in support of diversity hiring goals. She has participated on several nonprofit board of directors in support of housing for veterans. Toni served as President and Secretary on these boards. One of her passions is to give back to the community. In doing that she has served as a Big Sister, Girl Scout Leader and mentored young girls at risk in Los Angeles at the YWCA. Currently, Toni serves as a volunteer Wish Granter with Make a Wish in the Inland Empire.