Aurora S Corp Taxes 2026: Complete Guide for Colorado Business Owners
Understanding Aurora S corp taxes helps Colorado business owners cut their tax bills legally. For the 2026 tax year, S corporations file Form 1120-S by March 16, 2026. Aurora businesses also navigate Colorado’s 4.25% flat income tax and an 8% combined sales tax rate. This guide breaks down every deadline, rate, and strategy you need to file with confidence.
Table of Contents
- Key Takeaways
- What Are Aurora S Corp Taxes in 2026?
- When Are Aurora S Corp Returns Due in 2026?
- How Does Reasonable Salary Work for S Corp Owners?
- How Much Can You Save With an S Corp in Aurora?
- What Is Aurora’s Combined Sales Tax Rate for 2026?
- What Common S Corp Mistakes Should Aurora Owners Avoid?
- Uncle Kam in Action
- Next Steps
- Related Resources
- Frequently Asked Questions
Key Takeaways
- Aurora S corps file federal Form 1120-S by March 16, 2026.
- Colorado charges a flat 4.25% income tax on pass-through income.
- S corp owners must pay themselves a reasonable W-2 salary.
- Aurora’s combined sales tax rate reaches 8% across five jurisdictions.
- Distributions above salary avoid the 15.3% self-employment tax.
What Are Aurora S Corp Taxes in 2026?
Quick Answer: Aurora S corp taxes include federal pass-through filing on Form 1120-S, Colorado’s 4.25% flat income tax, and local sales tax where applicable.
An S corporation is a pass-through entity. Therefore, the business itself pays no federal income tax. Instead, profits and losses flow to the owners’ personal returns. Owners in Aurora then report that income on both federal and Colorado state filings. This structure helps many small business owners reduce their overall tax burden.
Aurora sits in Arapahoe County, Colorado. As a result, local business owners face several layers of tax rules. These include federal income tax, Colorado’s flat rate, self-employment tax savings, and local sales tax collection. Furthermore, S corps carry unique compliance duties that sole proprietors do not. Smart proactive tax strategy planning makes a real difference here.
Why S Corps Appeal to Aurora Business Owners
S corps offer a key advantage over sole proprietorships. Specifically, owners split their income into salary and distributions. Only the salary portion faces the 15.3% self-employment tax. Consequently, distributions escape that tax, which creates meaningful savings. Many small business owners in Aurora choose this path to keep more profit.
Federal and State Interaction
The IRS treats the S corp election under Subchapter S of the tax code. Meanwhile, Colorado conforms closely to federal rules for pass-through entities. However, the state adds its own filing requirements. For official guidance, review the IRS S corporations overview. In addition, Colorado’s rules appear on the state revenue site.
Pro Tip: File Form 2553 to elect S corp status. Submit it within 75 days of forming your entity.
When Are Aurora S Corp Returns Due in 2026?
Quick Answer: S corp returns (Form 1120-S) are due March 16, 2026. The extended deadline is September 15, 2026.
Deadlines matter for Aurora S corp taxes. The federal S corp deadline falls earlier than the individual deadline. Specifically, calendar-year S corps must file Form 1120-S by the 15th day of the third month. For 2026, that date is March 16 because March 15 lands on a Sunday. Missing this date triggers penalties quickly.
In addition, each shareholder receives a Schedule K-1. This form reports their share of income. Owners then use it on their personal April 15, 2026 federal return. Colorado individual returns share that same April 15 deadline. Therefore, timing coordination keeps you compliant. You can confirm federal dates on the IRS filing deadline page.
2026 Aurora Tax Deadline Table
| Filer Type | Form | Deadline | Extended Deadline |
|---|---|---|---|
| S Corporation | Form 1120-S | March 16, 2026 | September 15, 2026 |
| Partnership | Form 1065 | March 16, 2026 | September 15, 2026 |
| Individual | Form 1040 | April 15, 2026 | October 15, 2026 |
Penalties for Late Filing
Late S corp filings carry steep penalties. The IRS charges roughly $245 per shareholder per month. Moreover, this penalty applies for up to 12 months. For a two-owner Aurora S corp, that adds up fast. Therefore, file an extension with Form 7004 if you need more time. However, remember that an extension delays filing, not payment. Proper tax prep and filing support prevents these costly errors.
How Does Reasonable Salary Work for S Corp Owners?
Quick Answer: S corp owners must pay themselves a reasonable W-2 salary before taking distributions. The IRS requires fair-market compensation.
The reasonable salary rule sits at the heart of Aurora S corp taxes. Owner-employees must receive pay that reflects their work. In other words, you cannot take all profit as distributions. The IRS watches this rule closely. Consequently, setting the right salary protects you from audits. Review the official standard on the IRS S corp compensation page.
Many Aurora business owners partner with a Colorado tax preparation professional to set defensible salaries. This step matters because the IRS can reclassify distributions as wages. As a result, you could owe back taxes plus penalties. A documented, market-based salary keeps you safe.
Factors That Set a Reasonable Salary
- Your training, experience, and job duties
- Time and effort you devote to the business
- Pay for similar roles in the Denver metro area
- Company revenue and overall profitability
The 60/40 Guideline
Some advisors suggest a 60/40 split as a starting point. Under this approach, 60% goes to salary and 40% to distributions. However, no single rule fits everyone. Instead, your salary must match real market data. For example, an Aurora marketing consultant earning $120,000 might set $72,000 as salary. The remaining $48,000 becomes distributions. This structure cuts self-employment tax meaningfully.
Pro Tip: Document your salary research. Keep records of comparable Denver-area wages for audit protection.
How Much Can You Save With an S Corp in Aurora?
Quick Answer: Aurora S corp owners often save thousands yearly by avoiding self-employment tax on distributions.
The savings come from self-employment tax. Sole proprietors pay 15.3% on all net earnings. In contrast, S corp owners pay that tax only on salary. Therefore, distributions skip the Social Security and Medicare portion. For higher earners, this difference matters a lot. The savings grow as your profit rises.
Aurora business owners considering S corp election can use our LLC vs S-Corp Tax Calculator for Aurora to estimate 2026 tax savings. This tool compares both structures side by side. As a result, you see your potential savings clearly before filing.
Sample Savings Calculation
Consider an Aurora contractor with $100,000 net profit. As a sole proprietor, self-employment tax equals roughly $14,130. However, as an S corp with a $60,000 salary, the tax drops. Specifically, self-employment tax applies only to the $60,000 wage. This shift saves thousands each year.
| Structure | Taxable for SE Tax | Approx. SE/Payroll Tax |
|---|---|---|
| Sole Proprietor | $100,000 | ~$14,130 |
| S Corp ($60k salary) | $60,000 | ~$9,180 |
| Estimated Savings | — | ~$4,950 |
Retirement Savings Boost
S corp status also helps retirement planning. For 2026, the 401(k) contribution limit rises to $24,500. Those age 50 and over add an $8,000 catch-up. Furthermore, the IRA limit increases to $7,500 for 2026. These numbers come from official IRS inflation adjustments. Smart owners pair S corp savings with retirement contributions for maximum benefit.
Did You Know? The 2026 standard deduction reaches $32,200 for married filing jointly, up from $31,500 in 2025.
What Is Aurora’s Combined Sales Tax Rate for 2026?
Free Tax Write-Off FinderQuick Answer: Aurora’s minimum combined sales tax rate is 8%, built from five separate taxing jurisdictions.
Many Aurora S corps sell goods and must collect sales tax. The combined rate reaches 8% at minimum. However, this number blends five separate layers. Each jurisdiction funds different services. Therefore, understanding the breakdown helps you invoice correctly. Rates can also vary slightly by exact address.
Aurora Sales Tax Jurisdiction Breakdown
| Jurisdiction | Rate | What It Funds |
|---|---|---|
| Colorado State | 2.9% | Statewide services |
| Arapahoe County | 0.25% | County operations |
| City of Aurora | 3.75% | Local city services |
| RTD Greater Denver | 1.0% | Regional transit |
| Scientific & Cultural District | 0.1% | Arts and culture |
| Combined Minimum | 8.0% | — |
Goods vs. Services
Colorado generally taxes tangible goods, not most services. Therefore, an Aurora retail S corp collects sales tax. In contrast, a consulting S corp usually does not. Nevertheless, rules vary by industry. For official rates, check the Colorado Department of Revenue sales tax page. Aurora is also a home-rule city with its own tax office. As a result, you may file city sales tax separately.
Pro Tip: Register for an Aurora sales tax license before your first taxable sale.
What Common S Corp Mistakes Should Aurora Owners Avoid?
Quick Answer: Avoid underpaying salary, missing payroll filings, and skipping the Colorado pass-through entity return.
S corp compliance has pitfalls. Many Aurora owners stumble on the same issues. Fortunately, you can avoid each one with planning. Below are the most costly mistakes. Working with an advisor who understands proper entity structuring strategies helps you stay compliant.
Mistake 1: Paying No Salary
Some owners take all profit as distributions. However, this move invites an audit. The IRS can reclassify those funds as wages. Consequently, you face back payroll taxes plus penalties. Always run a reasonable W-2 salary first.
Mistake 2: Skipping Payroll Filings
S corps with employees must run payroll. This means filing Form 941 quarterly and Form 940 yearly. Moreover, you must issue W-2 forms by January 31. Missing these filings creates penalties. Therefore, set up reliable payroll systems early. A solid payroll and bookkeeping solution keeps everything on track.
Mistake 3: Ignoring Colorado Requirements
Colorado requires pass-through entities to file Form 106. In addition, Colorado offers a SALT parity election. This election lets the S corp pay state tax at the entity level. As a result, owners may bypass the federal SALT cap. Confirm current rules on the Colorado Department of Revenue website.
Did You Know? Colorado’s flat income tax rate of 4.25% applies equally to all income levels.
Uncle Kam in Action: An Aurora Freelance Designer Goes S Corp
Here is a hypothetical example of how this works in practice. Picture a self-employed graphic designer in Aurora, Colorado. She earns $110,000 in net profit each year. Currently, she files as a sole proprietor on Schedule C.
The Challenge: As a sole proprietor, she pays 15.3% self-employment tax on all $110,000. That equals roughly $15,540 before deductions. Moreover, she feels frustrated watching this money leave each quarter. She wants a legal way to reduce the burden.
How Uncle Kam Would Approach It: First, we would review whether an S corp election fits her situation. Next, we would set a reasonable W-2 salary based on Denver-area designer pay. Then, we would structure the rest as distributions. Finally, we would handle her Form 1120-S and Colorado Form 106 filings.
Illustrative Numbers: Suppose we set her salary at $65,000. Payroll tax would apply only to that amount, totaling about $9,945. The remaining $45,000 as distributions avoids self-employment tax. As a result, she could save roughly $5,600 each year. Over five years, that estimate grows past $28,000 in potential savings.
This example shows the power of proactive planning. However, every situation differs. Therefore, individual results vary based on income and expenses. See real outcomes on our client results and case studies page. Smart structuring turns tax frustration into lasting savings.
Next Steps
Ready to optimize your Aurora S corp taxes? Take these actions now to prepare for the 2026 filing season. Our team at Aurora tax preparation services can guide every step.
- Confirm your S corp election status with Form 2553.
- Set a documented, reasonable salary before year-end.
- Mark March 16, 2026 for your Form 1120-S deadline.
- Schedule a personalized tax advisory consultation today.
- Register for an Aurora sales tax license if selling goods.
Related Resources
Frequently Asked Questions
When are Aurora S corp taxes due in 2026?
Calendar-year S corps file Form 1120-S by March 16, 2026. The date shifts from March 15 because it falls on a Sunday. You can extend to September 15, 2026 using Form 7004.
What is Colorado’s income tax rate for S corp income?
Colorado uses a flat 4.25% income tax rate. This rate applies to pass-through income reported on your personal return. Unlike federal brackets, every income level pays the same percentage.
Do I need to pay myself a salary as an S corp owner?
Yes. The IRS requires reasonable W-2 compensation for owner-employees who work in the business. Skipping salary risks reclassification of distributions as wages. This can trigger back taxes and penalties.
What is Aurora’s sales tax rate in 2026?
Aurora’s minimum combined sales tax rate is 8% for 2026. It combines state (2.9%), county (0.25%), city (3.75%), RTD (1%), and cultural district (0.1%) rates. Exact rates may vary by address.
How much can an Aurora S corp save in taxes?
Savings depend on profit and salary levels. An owner with $100,000 profit might save around $5,000 yearly. The savings come from avoiding self-employment tax on distributions.
Does Colorado require a separate S corp filing?
Yes. Colorado S corps file Form 106 for pass-through entities. The state also offers a SALT parity election. This option lets the entity pay state tax directly, potentially helping owners.
This information is current as of 10/12/2026. Tax laws change frequently. Verify updates with the IRS or Colorado Department of Revenue if reading this later.
Last updated: October, 2026
