Oldenburg Accountants & Advisors

Oldenburg Accountants & Advisors I have a boutique CPA firm serving business owners. I help them structure a tax-advantaged deal when buying or selling the business.

I prepare accurate financial statements and meet regularly with business owners to help them interpret the financials. Since 1991, Oldenburg Accountants & Advisors has been committed to providing reliable, high-quality tax, accounting and advisory services to small and medium-sized enterprises (SMEs) in northern Illinois and Chicagoland. Our clients are family-owned businesses and often, multi-gen

erational. Oldenburg Accountants & Advisors a small, boutique CPA firm where the owner, Sue Oldenburg, is directly involved with every business owner client. We have a reputation for sustaining long-term relationships with our clients. We work proactively with SME business owners to help them interpret and act upon the financial indicators of their businesses so they can make decisions based on reality instead of operating in the dark. We specialize in assisting our clients to:
--Track profitability by job, customer, product, department or location
--Forecast and improve cash flow
--Benchmark against their peers in their industry
--Determine critical success factors for their particular business
--Establish and measure key performance indicators
--Present financial information to banks to win loans

Owner and founder Susan A. Oldenburg is an experienced business owner with more than twenty-five years in the public accounting industry. As both a CPA (Certified Public Accountant) and EA (Enrolled Agent), Sue has a comprehensive knowledge of business planning and monitoring as well as a specialized knowledge of taxation. Under both designations, she has unlimited practice rights and is unrestricted to which taxpayers can be represented before the IRS. When she is not at the office, you can find her reading, listening to music, cooking, spending time with her cat Lizzi and relaxing with friends and family in Door County.

Has administrative complexity discouraged your business from offering a 401(k) plan? Take a look at the safe harbor 401(...
06/17/2026

Has administrative complexity discouraged your business from offering a 401(k) plan? Take a look at the safe harbor 401(k). The employer contribution obligation generally exempts the plan from nondiscrimination testing and other onerous administrative duties. Plus, this plan enables highly compensated employees to max out their contributions and can help attract and retain workers. Typically, employees are eligible to participate if they're age 21 or older and have at least one year of service. Call us (847) 263-0303 for details.

It can be tough for small businesses to borrow money at favorable terms. But the U.S. Small Business Administration (SBA...
06/16/2026

It can be tough for small businesses to borrow money at favorable terms. But the U.S. Small Business Administration (SBA) offers several loan programs to help small businesses grow and create jobs. SBA loans of up to $5.5 million may be available and typically offer competitive interest rates and terms. Applying and qualifying for an SBA loan may also be easier than for conventional loans. The most popular type is the 7(a) loan, which can be used for most business purposes, including asset purchases and debt refinancing. The microloan program offers loans of up to $50,000. Call us at (847) 263-0303to help determine the right option for your business.

A mission statement is a concise, formal declaration of a business’s core purpose. The right one can serve as a rallying...
06/15/2026

A mission statement is a concise, formal declaration of a business’s core purpose. The right one can serve as a rallying cry for employees and a powerful marketing tool that attracts customers and drives revenue. So, whether you’re writing one for the first time or revising it during a rebrand, craft yours carefully. It can have a surprising impact on your bottom line. Please call us at (847) 263-0303 for help aligning your company’s core purpose with its financial parameters and strategic objectives.

Certain “small businesses” may qualify for several valuable tax breaks. But different tax provisions use different size ...
06/11/2026

Certain “small businesses” may qualify for several valuable tax breaks. But different tax provisions use different size tests. For instance, a gross receipts test is used to determine eligibility for cash accounting, simplified inventory rules, the completed contract method, relief from UNICAP requirements and exemption from the business interest deduction limitation. This threshold is adjusted for inflation. For 2026, your business may be eligible if its average annual gross receipts for the prior three-year period were $32 million or less. Call us at (847) 263-0303 for help evaluating your eligibility for these and other tax-saving opportunities based on your business’s structure and operations.

Starting in 2026, the tax rules for the personal casualty loss deduction are changing. While the deduction remains limit...
06/10/2026

Starting in 2026, the tax rules for the personal casualty loss deduction are changing. While the deduction remains limited mainly to disaster-related losses, eligibility is expanding beyond federally declared disasters to include certain state-declared disasters. Because the rules are complicated and additional limits apply, review your situation with us. We can help determine whether you’re eligible for a casualty loss deduction. Contact us at (847) 263-0303.

For the 12 months ending in April 2026, the U.S. inflation rate was 3.8%. Rising inflation can make managing a business ...
06/09/2026

For the 12 months ending in April 2026, the U.S. inflation rate was 3.8%. Rising inflation can make managing a business challenging, yet you can still thrive by making prudent cost cuts and acting if opportunities arise. You might, for example, reduce expenses by switching vendors, cutting overtime hours or moving offices. Be sure to assess inflation’s effect on each product line and determine whether your product mix still makes sense. Then decide whether you should raise prices (just be sure to give customers fair notice). For help evaluating your current financial situation and developing additional inflation-fighting strategies, call us at (847) 263-0303.

In strategic planning, it can be hard for business owners to step back and evaluate opportunities objectively. An extern...
06/08/2026

In strategic planning, it can be hard for business owners to step back and evaluate opportunities objectively. An external advisory board can offer fresh, independent perspectives and seasoned guidance, especially when handling high-stakes, complex transactions. A board’s involvement can elevate professionalism, strengthen credibility with stakeholders and support smarter long-term decisions. Contact us at (847) 263-0303 to explore how creating an advisory board, or optimizing your current one, can help your business grow.

Small business owners, beware: Tax identity theft is a costly, ongoing threat. Criminals may file fraudulent returns usi...
06/04/2026

Small business owners, beware: Tax identity theft is a costly, ongoing threat. Criminals may file fraudulent returns using a business’s EIN, impersonate executives to steal employee W-2 data, or use forged IRS documents to pose as a business for financial or tax-related activity. Protect your organization by implementing a cybersecurity plan, securing sensitive data, training employees and using technology tools such as encryption and multi-factor authentication. Working with a trusted tax professional is also critical. We can review your risks, recommend safeguards and determine the next steps if something looks suspicious. Contact us at (847) 263-0303 to learn more.

A donor-advised fund (DAF) is one option available to support charities while reducing your taxable estate. By contribut...
06/03/2026

A donor-advised fund (DAF) is one option available to support charities while reducing your taxable estate. By contributing cash or appreciated assets to a DAF, you also may qualify for an immediate charitable income tax deduction without needing to identify the specific charitable recipients right away. This gives you more time to research potential recipients or change the organizations you support from year to year. For families focused on legacy planning, DAFs can also help align heirs around charitable goals. Contact us at (847) 263-0303 for additional details.

Is your business paying for insurance coverage you don’t need — or missing protection where risk may be significant? You...
06/02/2026

Is your business paying for insurance coverage you don’t need — or missing protection where risk may be significant? You may have many options to choose from, depending on your organization’s operations and risks. General liability is the most basic policy, and it’s often paired with product liability, professional liability and property coverage. Other products include employment practices liability, business interruption, key person and cyberinsurance policies. Work with an independent broker to learn more about each type. And call us at (847) 263-0303. We can help you evaluate potential coverage gaps and manage business risk cost-effectively.

Address

100 N Atkinson Road, Suite 106
Grayslake, IL
60030

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

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