# Lockhart & Company CPA — Full Index > Colorado Springs CPA firm. S-Corp taxation, small business accounting, individual tax preparation, business formation, and IRS/Colorado tax notice resolution. Serving Colorado small businesses since 1986. This is the extended index for AI crawlers. Each link includes a one-line summary of the page's contents. ## Firm - [Home](https://lockhartcpas.com/): Overview of services, areas of focus, and how to start working with the firm. - [About](https://lockhartcpas.com/about): Firm history since 1986, philosophy, and credentials of the practice. - [The Team](https://lockhartcpas.com/the-team): Profiles of the CPAs and staff who handle client engagements. - [Reviews](https://lockhartcpas.com/reviews): Client testimonials and case results. - [Contact](https://lockhartcpas.com/contact): Office address in Colorado Springs, phone, email, and intake form. ## Services - [All Services](https://lockhartcpas.com/services): Top-level overview of every service the firm offers. - [Individual Tax Preparation](https://lockhartcpas.com/services/individual-tax-preparation): Personal 1040 returns, multi-state filings, and Colorado-specific issues. - [Business Tax Return Preparation](https://lockhartcpas.com/services/business-tax-return-preparation): Federal and Colorado returns for S-Corps (1120-S), C-Corps (1120), partnerships (1065), and Schedule C sole proprietors. - [Business Formation & S-Corp Election](https://lockhartcpas.com/services/business-formation-and-s-corp-election): Entity selection, formation paperwork, and S-Corp election via Form 2553. - [Consulting & Advisory](https://lockhartcpas.com/services/consulting-and-advisory): Year-round strategic tax planning, entity structure review, and owner compensation strategy. - [Tax Notice Resolution](https://lockhartcpas.com/services/tax-notice-resolution): Responding to and resolving IRS and Colorado Department of Revenue notices, including CP2000s and audits. - [Business Accounting & Planning](https://lockhartcpas.com/business-accounting-and-planning): Bookkeeping, monthly financials, and forward-looking planning. - [S-Corp Tax](https://lockhartcpas.com/s-corp-tax): Deep dive on S-Corporation taxation, reasonable compensation, and shareholder distributions. - [File S-Corp](https://lockhartcpas.com/file-s-corp): Step-by-step on electing S-Corporation status for an existing LLC or corporation. ## Resources - [Resources](https://lockhartcpas.com/resources): Guides, calculators, and reference links for small business owners. - [Blog](https://lockhartcpas.com/blog): Index of all blog articles. ## Blog posts - [Estimated Tax Payments for Colorado Small Businesses: Schedule and Thresholds](https://lockhartcpas.com/blog/estimated-tax-payments-for-colorado-small-businesses-schedule-and-thresholds): - [Form 1065 vs 1120-S: Which Does Your Colorado Business File?](https://lockhartcpas.com/blog/form-1065-vs-1120-s-which-does-your-colorado-business-file): - [IOLTA Trust Accounting: What Your CPA Needs to Understand](https://lockhartcpas.com/blog/iolta-trust-accounting-what-your-cpa-needs-to-understand): This article reflects Colorado Rules of Professional Conduct 1.15A–1.15E as of April 2026, administered by the Office of Attorney Regulation Counsel (OARC). Trust accounting rules. - [What Denver Dentists Should Look for in a CPA](https://lockhartcpas.com/blog/what-denver-dentists-should-look-for-in-a-cpa): This article reflects federal and Colorado tax law as of March 2026, including the One Big Beautiful Bill Act (signed July 4, 2025). Tax... - [Tax Deductions Most Colorado Doctors Miss: A CPA’s Checklist](https://lockhartcpas.com/blog/tax-deductions-most-colorado-doctors-miss-a-cpas-checklist): This article reflects federal and Colorado tax law as of March 2026, including the One Big Beautiful Bill Act (signed July 4, 2025). Tax... - [I Got an IRS CP2000 Notice: What It Means and What to Do](https://lockhartcpas.com/blog/i-got-an-irs-cp2000-notice-what-it-means-and-what-to-do): This article reflects IRS procedures as of March 2026. Tax situations vary — if you've received a CP2000 notice, consult with a qualified CPA... - [Colorado QBI Deduction Addback: What Pass-Through Owners Need to Know](https://lockhartcpas.com/blog/colorado-qbi-deduction-addback-what-pass-through-owners-need-to-know): This article reflects Colorado tax law as of March 2026, including HB 25B-1001 (signed August 28, 2025) and the federal One Big Beautiful Bill... - [1099 vs W-2: How to Classify Workers Correctly (And Avoid $10,000+ IRS Penalties)](https://lockhartcpas.com/blog/1099-vs-w-2-how-to-classify-workers-correctly-and-avoid-10000-irs-penalties): 1099 vs W-2: How to Classify Workers Correctly (And Avoid $10,000+ IRS Penalties) Worker classification errors rank among the costliest mistakes Colorado Springs small businesses m - [Do I Need a CPA for My Small Business? 10 Signs Colorado Springs Entrepreneurs Should Hire a Professional](https://lockhartcpas.com/blog/do-i-need-a-cpa-for-my-small-business-10-signs-colorado-springs-entrepreneurs-should-hire-a-professional): - [One Big Beautiful Bill Act 2025: Complete Guide for Colorado Springs Small Business Owners](https://lockhartcpas.com/blog/one-big-beautiful-bill-act-2025-complete-guide-for-colorado-springs-small-business-owners): - [Colorado Sales Tax Vendor Fee Elimination 2026: What Colorado Springs Small Businesses Need to Know](https://lockhartcpas.com/blog/colorado-sales-tax-vendor-fee-elimination-2026-what-colorado-springs-small-businesses-need-to-know): - [7 Proven Ways to Save Money on Your Business Taxes in 2026](https://lockhartcpas.com/blog/7-proven-ways-to-save-money-on-your-business-taxes-in-2026): 7 Proven Ways to Save Money on Your Business Taxes in 2026 The One Big Beautiful Bill Act signed on July 4, 2025, has fundamentally transformed the business tax landscape,... - [What Happens If I Don’t Get an EIN? Critical Consequences for Business Tax Returns and Compliance](https://lockhartcpas.com/blog/what-happens-if-i-dont-get-an-ein-critical-consequences-for-business-tax-returns-and-compliance): - [Business Tax Structure Comparison: LLC vs S-Corp vs C-Corp Tax Strategies for 2025](https://lockhartcpas.com/blog/business-tax-structure-comparison-llc-vs-s-corp-vs-c-corp-tax-strategies-for-2025):