Most people meet their tax preparer once a year, hand over documents, and hope for the best. For Chicago, IL business owners and high earners, that's the most expensive habit in personal finance. Real tax planning is proactive — a year-round process of structuring income, timing decisions, and using every legal tool before December 31, when most opportunities close for good. Illinois charges a flat 4.95% state income tax on top of federal, so the federal moves carry the full weight.
It starts with entity structure. The choice between a sole proprietorship, an S-corp, a partnership, and a C-corp changes how every dollar of profit is taxed, what you pay in self-employment tax, and which deductions you can take. Owners across the Chicago area in trading and finance, manufacturing, logistics, and healthcare routinely overpay for years simply because nobody revisited a structure they chose when the business was a fraction of its current size.
Timing is the next lever. Accelerating or deferring income and expenses across tax years, harvesting losses, bunching deductions, and timing major purchases or asset sales can move your taxable income into a lower bracket — but only if the moves are made before year-end. A preparer working in April can only report what already happened; a planner working in the fall can change the outcome.
Retirement and benefit plans are some of the largest deductions a profitable owner has access to, and they double as wealth-building. A Solo 401(k), SEP-IRA, or cash-balance plan can shelter tens or hundreds of thousands of dollars while funding your future. Layer in an accountable plan, an HSA, and the right treatment of vehicles, equipment, and home office, and the savings compound year over year.
The thread connecting all of it is that tax planning and the rest of your financial life are the same conversation. Investment decisions, business decisions, and estate decisions all have a tax dimension, and handling them in separate silos is how money leaks. A coordinated plan treats them as one system.
At Big Ass Tax Returns we build proactive, year-round tax plans for Chicago, IL owners and high earners — then file the return that proves the strategy worked. For clients who want that plan integrated with investments, retirement, and a business exit, we coordinate with our sister advisory firm, Michelet Financial.
Big Ass Tax Returns serves clients in Chicago, IL and nationwide. Get a strategy built around keeping more of your money.
Call (225) 396-5511Preparation is backward-looking — reporting what already happened. Planning is forward-looking — structuring income, timing decisions, and using deductions before year-end to legally lower what you owe. By the time you file, most planning opportunities for that year are already closed.
Often, yes. The choice between sole proprietor, S-corp, partnership, and C-corp changes how profit is taxed and what self-employment tax you pay. Many owners overpay for years because nobody revisited a structure chosen when the business was much smaller.
Well before December 31 — ideally in the third or fourth quarter, when there's still time to act. Many of the most valuable moves (income timing, retirement-plan funding, asset purchases) must be completed before year-end to count.