Certified Public Accountant Services at an affordable price. Integrity Accounting serves clients virtually nationwide and onsite in Brookings and Sioux Falls,, SD. Our focus is to provide service like you have never experienced before. We offer a free consultation to develop a plan that meets your exact accounting needs. This enables you to pay for only what you need while having the benefit of having a trusted advisor at your side. You no longer have to fear a hefty fee for your questions. Support is included in your package. We provide upfront pricing and on-time billing. We also offer affordable, professional tax return planning and preparation for individuals and businesses.