My wife owns, a small business, Counseling Therapy Group. She has an LLC, single member. The revenue has grown over past 5 years in business, may break 7 figures gross in 2025. Determining if she should elect as an S-Corp, but the only tax savings would be on FICA correct? She has a SAFE HARBOR 401-k and employees are offered too. We max it out. We rent the space we are in, deduct anything we can see as an expense. Where else can we get tax savings?