Running a business in Montana takes a certain kind of person. You're managing employees, chasing revenue, handling operations, and trying to plan for a future that doesn't always cooperate with your timeline. Financial planning often ends up on the back burner, not because business owners don't care about it, but because there's always something more urgent demanding attention.
The problem is that the financial decisions you delay or don't address as a business owner tend to be the ones with the longest consequences. Over 25 years of working with Montana business owners in Billings and across the state of Montana, we've seen the same mistakes come up again and again. Here are the seven that cause the most trouble, and what you can do about them.
1. Treating Business and Personal Finances as One
This is the most common mistake we see, especially in the early years of a business. When revenue flows in and out of a single account, it becomes nearly impossible to understand what the business is earning, what you personally can afford to spend, and what's left for taxes and retirement.
Separating business and personal finances is not just good bookkeeping, but it can protect you legally, give you a cleaner picture of business performance, and make tax season significantly less painful. At minimum, a dedicated business checking account and a business credit card are a good place to start. The SBA has an overview of how to manage your business finances if you're looking for a basic framework to start with.
2. Not Having a Written Financial Plan for Your Business
A lot of business owners operate with a general sense of where things stand financially, but don’t have a written plan that lays out cash flow projections, revenue goals, expense targets, and contingency reserves. When things are going well, this can feel like it works. When a slow quarter hits, an unexpected expense comes up, or a key employee leaves, the absence of a plan creates vulnerability and confusion.
A business financial plan doesn't need to be complicated. It needs to cover your monthly fixed costs, your revenue targets, your cash reserve goals, and a basic projection of what the next 12 months should look like. The SBA's business planning resources are a useful starting point for owners who haven't put one together before. Reviewing it twice a year keeps it from becoming a document you wrote once and forgot about.
3. Underfunding Retirement Because the Business Is "The Plan"
We hear this often: "My retirement plan is selling the business." It's a reasonable idea, but it carries more risk than most business owners realize. A business is worth what someone will pay for it at the time you want to sell, and that number is influenced by market conditions, industry trends, your health, and factors you can't always control.
Business owners who rely exclusively on a sale to fund retirement often find themselves either working longer than they planned or selling for less than they need. Building retirement savings alongside the business gives you options regardless of how the sale goes. A SEP-IRA allows contributions of up to 25% of compensation or $72,000 in 2026, whichever is less. A Solo 401(k) allows up to $24,500 in employee deferrals for 2026, plus an employer contribution on top of that. The tax advantages on these accounts are significant, which makes them one of the more efficient planning tools available to business owners. We've written more about retirement planning options for Montana business owners on our blog.
4. Ignoring Cash Flow Until It Becomes a Crisis
Profit and cash flow are not the same thing, and confusing the two is one of the most dangerous financial mistakes a business owner can make. A business can be profitable on paper and still run out of cash if receivables are slow, inventory is tied up, or a large expense hits at the wrong time.
Monitoring cash flow monthly (not just at tax time) gives you enough lead time to make adjustments before a shortfall becomes a crisis. A cash reserve equal to two to three months of operating expenses is a reasonable cushion for most small businesses, though the right number depends on the nature and seasonality of your business.
5. Carrying the Wrong Insurance Coverage
Most business owners have some form of business insurance, but fewer have taken a close look at whether their coverage matches their current risk exposure. A policy that was adequate five years ago may have significant gaps today if the business has grown, added employees, taken on new liabilities, or expanded its services.
A few coverage areas that are commonly underinsured for Montana small businesses include key person life insurance, business interruption coverage, and umbrella liability. If something happened to you tomorrow, would your business have the financial runway to survive while a transition was sorted out? Key person insurance answers that question, and it's one of the conversations we have regularly with business owner clients in Billings.
6. No Exit Strategy
A surprising number of business owners spend decades building something without a clear plan for what happens when they're ready to step away. Whether you plan to sell to a third party, transfer to a family member, or transition to a partner or key employee, each path has different financial, legal, and tax implications.
Exit planning typically takes three to five years to do well, and the owners who come out ahead are almost always the ones who started that process early. If you haven't had a formal conversation about your exit strategy, that conversation is overdue. We've helped a number of Montana business owners think through this, and we have resources available about small business asset protection as part of that planning process.
7. Not Working with a Financial Advisor Who Understands Business
Personal financial planning and business financial planning are related, but not the same. A financial advisor who works primarily with individuals may not have a strong grasp of business structure, entity-level tax planning, buy-sell agreements, or succession planning. Working with a financial advisor for business owners who understands how your business fits into your overall financial picture makes a meaningful difference in the quality of the planning you receive.
At Spitfire Financial Group, we work with business owners across Billings and Montana who are building their companies, planning for transitions, and trying to make sure the business serves their life rather than the other way around. If any of the mistakes above sound familiar, give our team a call at (406) 657-9621.
Frequently Asked Questions
What is the most common financial planning mistake small business owners make?
The most common mistake is mixing personal and business finances. When revenue and expenses flow through the same accounts, it's difficult to track business performance, plan for taxes, or understand what's available for personal spending. Separating the two with a dedicated business account is one of the most straightforward steps an owner can take to get a clearer financial picture.
How much should a small business owner contribute to retirement?
It depends on the business structure and income level, but most small business owners have access to accounts with significantly higher contribution limits than traditional employees. A SEP-IRA allows contributions up to 25% of compensation or $72,000 in 2026. A Solo 401(k) allows up to $24,500 in employee deferrals in 2026, plus an additional employer contribution. The right amount depends on your tax situation, cash flow needs, and how close you are to retirement. A financial advisor who works with business owners can help you identify the most tax-efficient approach for your situation.
When should a small business owner start exit planning?
Earlier than most people think! A well-executed business transition typically takes three to five years to plan and execute properly. Whether you plan to sell, transfer to family, or hand off to a key employee, each path has different tax, legal, and financial implications that take time to structure correctly. Business owners who start planning five or more years before their intended exit date consistently have more options and potentially better outcomes than those who wait until they're ready to walk out the door.
The opinions voiced in this material are for general information only and are not intended to provide specific advice or recommendations for any individual.