WealthRunning an S corporation can lower self-employment taxes by splitting pay into W-2 salary and distributions, but the IRS expects that salary to be reasonable for the work performed. This guide gives a practical, planning-first framework for a Software Engineer in Illinois, plus the official sources your CPA will want to see.
Last reviewed: January 21, 2026.
If your role or income shifted this year, assume the salary range should move too.
Software engineers contribute via product delivery, architecture, and technical leadership. Compensation drivers include scope of responsibility, team leadership, and equity-linked roles.
Independent software engineers mix deep delivery work with architecture decisions, client communication, and support. Revenue can be project-based or retainer-based, which changes how steady compensation should look. Illinois applies a replacement tax to S corporations, which adds a predictable layer to the entity’s cost structure. In many markets, benefits and insurance costs are a larger part of overhead, which can justify a higher wage floor. Use the OEWS wage range as an anchor, then sanity-check it against local hiring realities and your exact responsibilities. The goal isn’t a perfect number; it’s a defensible narrative your CPA can validate with your file.
Note: OEWS May 2025 was released on May 15, 2026 (latest available as of June 11, 2026). (https://www.bls.gov/oes/update.htm)
Reasonable compensation is the wage you would pay someone else to do your job under similar conditions. The IRS looks at duties, experience, time spent, and what comparable roles earn, not a fixed percentage of profit. Use multiple data points to defend a range, not a single number.
Define the role. Capture what you actually do: client/patient load, revenue responsibility, admin oversight, and business development.
Benchmark a range. Use BLS occupational wage data plus any industry surveys or local comps your CPA trusts. Focus on state-level data where possible.
Model the split. Pay the reasonable wage as W-2 salary; treat the remaining profit as distributions only after the wage is defensible.
Document the rationale. Keep your notes, sources, and calculations with the tax file so your CPA can defend the position.
Example: A Illinois software engineer who leads architecture and mentorship should benchmark against senior-level roles rather than mid-level market data.
Do I need a separate state S election in Illinois? Many states require additional registration or elections beyond the federal S election. Confirm the Illinois requirements with your CPA and the state tax authority.
Should I use national or Illinois wage data? State or local data is typically more defensible when available. Use BLS data and any reputable industry surveys your CPA prefers.
What documents should I keep? Time allocation notes, comparable wage sources, and written rationale for the salary range are the most common requests.
Use the S-corp Reasonable Compensation Guide to draft your range, then bring it to your CPA for validation.
This guide is for planning and coordination only. It does not provide tax or legal advice. Confirm details with a qualified professional.