Cofounder Conflict Could Be One of the Biggest Threats to Your New Business

April 20, 2026
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If you asked brand-new entrepreneurs to make a list of everything they think might one day pose a threat to their startup, you'd probably hear a variety of answers with similar themes. Some might be (rightfully) worried about ultimately developing a product in search of a marketplace. Others may be worried about how they're going to overcome the cash flow issues they'll likely face. Others still might be worried about getting "taken for a ride" by the venture capital people they're putting so much of their faith in. While all of these are understandable concerns, none of them should be at the top of that list. The fact of the matter is, the number-one threat to your business isn't an external factor at all. It's the people you've cofounded that business with. While it's absolutely true that founding a business with at least one other person increases your chances of becoming a success, it's equally true that about 50% of cofounder relationships fail, and most of those failures are ugly. This is because cofounder conflict is very real and far more common than many people prefer to assume. But by taking the time to learn as much about it as you can, you put yourself (and your colleagues) in the best position to mitigate risk from these issues as much as possible — before it’s too late. Why Cofounder Conflict Happens Cofounder conflict can ultimately happen for a myriad of reasons, and not all of them are going to be immediately obvious. Sometimes when you start a business with someone else, you don't realize just how incompatible your managerial styles are because you've never had the chance to put them on display. But once your startup is up on its feet and real decisions are being made on a daily basis, you might discover that you and your cofounder have two very different working styles. Other times it comes down to the fact that roles and responsibilities among cofounders are not clearly defined. Who is actually supposed to be doing what? What is your specific job description and how does it overlap with that of your cofounders? What boundaries are in place that give each of you your necessary space, but that also allow you to truly collaborate with one another in the way you need to run a successful business? Another issue could be the absence of stipulations on how “significant future changes will affect the management and control of the business.” Without a buy-sell agreement and succession plan in place, your business is at risk if any major event — like your partner’s death, divorce, or bankruptcy — may occur. Finally, one of the biggest causes of cofounder conflict is that entrepreneurs make the mistake of taking any conflict as a warning sign that something sinister is afoot. The truth is that running a business is hard and there are times where you will have arguments and disagreements with the people around you. This is true regardless of how similar your backgrounds are or how closely your visions align. If you go through life assuming that conflict is something you can totally avoid, you're in for a number of surprises and almost none of them are good. The key to a successful, long-term relationship with your cofounders involves not running from that conflict but embracing it. Have the argument. Talk about your differences. Hash things out and come to a solution together. Every moment may not be as fun as you'd hoped, but you will absolutely come out better for it. Mitigating Cofounder Conflict: Breaking Things Down Here’s the good news: once you've taken steps to learn about what cofounder conflict actually is and why it happens, you put yourself in the best position to avoid it in your own efforts — at least as much as possible. By far, the key to at least relieving some of this conflict involves first identifying why it is happening with your particular startup. Are you having frequent arguments with your cofounders because of significant personality changes? Is it because your work ethics differ a great deal? Do you come from different backgrounds? Do you have totally contrasting management styles? When left unchecked, these differences can form a major chasm that can be difficult to overcome. But if you identify them in your early days as an entrepreneur, you may be able to find a way to meet your cofounders "in the middle," so to speak, to avoid bigger issues later on. Remember that being an entrepreneur and founding a business with someone else ultimately requires a fair amount of give and take. Your startup does not belong exclusively to you and it would be unfair of you to act that way. Therefore, once you start to see conflict develop, don't be afraid to address it head-on... but also understand that you must be willing to make compromises, too. Don't just spend time identifying problems with someone else — offer up solutions of your own. In terms of mitigating some of these potential risks, a buy-sell agreement can be very effective (and should be viewed as a necessity). This legally-binding document “anticipates the intent and needs of the owners, as well as the potential conflicts that may arise among them if one or more wishes to sell his/her interest in the business or is forced to dispose of such interest.” Consulting with a tax and accounting professional during the process of negotiating a buy-sell agreement can be very beneficial for all parties involved. Contact our office for more information. If you acknowledge your startup for what it really is — a collaboration between two or more people — you stand the best possible chance at ending the lion's share of these cofounder conflicts before they've ever had a chance to start. At that point, the proverbial runway will be clear and there really is no limit to what you can accomplish together.

Tax and Financial Insights
by NR CPAs & Business Advisors

Explore practical articles that explain tax strategies, financial considerations, and important topics that may affect your business decisions.

2026 IRS Mileage Rates: Key Updates and Insights

The IRS has rolled out the inflation-adjusted mileage rates for 2026, offering taxpayers an efficient way to claim deductions for vehicle-related expenses incurred for business, charity, medical, or moving purposes. These adjustments reflect the continued economic shifts impacting car operation costs.

Effective January 1, 2026, the new standard mileage rates are established as follows:

  • Business Travel: Increased to 72.5 cents per mile, inclusive of a 35-cent-per-mile depreciation allocation. This marks a rise from the 70 cents per mile rate set for 2025
  • Medical/Moving Purposes: Reduced slightly to 20.5 cents per mile, down from 21 cents in the previous year, reflecting the variable cost considerations.
  • Charitable Contributions: Consistent at 14 cents per mile, a fixed rate unchanged for over a quarter-century.

As is typical, the business mileage rate considers the integral fixed and variable costs of automobile operation. Meanwhile, the medical and moving rates remain contingent on variable expenses as determined by the IRS study.

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It is critical to note that the One Big Beautiful Bill Act (OBBBA) held firm on disallowing moving expense deductions except for specific cases within the Armed Forces and intelligence community, marking a substantial shift since 2017.

When engaging in charitable work, taxpayers might opt for a direct expense deduction over the per-mile method, covering gas and oil costs. However, comprehensive upkeep and insurance costs are non-deductible expenses.

Business Vehicle Use Considerations: Taxpayers can alternatively compute vehicle expenses using actual costs, which might benefit from shifting depreciation rules, particularly through bonuses and first-year advantages. Keep in mind, however, reverting from actual cost calculations to standard rates in subsequent years is restricted, particularly per vehicle protocol and when exceeding four vehicles in concurrent use.

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Additionally, parking, tolls, and property taxes attributable to business can be deducted independently of the general rate, an often-overlooked advantage by many business owners.

Tax Strategies for Employers and Employees: Reimbursements based on the standard mileage framework, providing the right documentation is in place, remain tax-free for employees. Meanwhile, the elimination and continued prohibition of unreimbursed employee deductions continue, with particular exceptions offered to qualified personnel across specific occupations.

Opportunities for Self-employed Individuals: Entrepreneurs remain eligible for deductions on business-related vehicle use via Schedule C, with potential to account for business-use interest on auto loans.

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Heavy SUVs and Deduction Advantages: Heavier vehicles exceeding 6,000 pounds but under 14,000 pounds open opportunities for substantial tax deductions through Section 179 and bonus depreciation avenues. The lifecycle of such a vehicle bears implications on recapturing initially claimed deductions, urging cautious tax planning.

For professional guidance on optimizing your vehicle-related tax deductions and understanding their implications on tax strategies, contact our office in Coral Gables, Florida, where expert advice and strategic insights are just a call away.

Educator's Deduction Reform: Key Changes Under OBBBA

The One Big Beautiful Bill Act (OBBBA) introduces significant enhancements for educators' tax deductions starting in 2026, offering both strategic opportunities and planning considerations for educators who qualify. With the reinstated itemized deduction for qualified unreimbursed expenses, educators have a broader spectrum of financial relief. This is complemented by the retention of the $350 above-the-line deduction, allowing educators to maximize their tax benefits by selectively allocating expenses between these avenues.

Understanding the nuances of these changes is crucial for educators and financial advisors alike. The dual-option deduction strategy can potentially enhance tax efficiency, thereby aligning with broader financial planning goals.

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At NR CPAs & Business Advisors, based in Coral Gables, Florida, our expertise in tax preparation and planning provides invaluable support to educators navigating these changes. Our comprehensive approach, combined with personalized advice from our experienced team, ensures compliance and optimization in line with the latest tax legislations.

Given these updates, it is imperative to engage with seasoned professionals to fully leverage your deduction strategies. Contact us today to streamline your tax planning under OBBBA's new guidelines and maximize your deductions for upcoming tax years.

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