A CPA practice that has been filing returns since 1986 and now counts more than a thousand businesses and three thousand individuals on its books is not a startup testing the waters. That scale, run out of an office in Naperville, Illinois, is the first thing worth knowing about S Lewis CPA LLC, and it shapes almost everything else on the site. S Lewis CPA LLC trades under the name Susan S. Lewis, Ltd., and the work spans far more than the seasonal tax return most people associate with an accountant.

Tax and accounting services offered

The service list is broad in a way that reads as genuine rather than padded. On the tax side there is income tax preparation and planning, estate and trust tax, IRS representation, state and local tax, and the heavier corporate work of mergers, acquisitions, and business restructuring. The accounting side covers payroll, bookkeeping, audits, financial statements, outsourced accounting, and financial planning, up to fractional CFO services for companies that need senior finance help without a full-time hire. Put together, S Lewis CPA LLC is set up to be the single accounting relationship a growing business keeps for years, not a once-a-year filing shop.

Industries served by the firm

The client mix backs that up. S Lewis CPA LLC lists small and medium businesses, franchises, nonprofits, real estate, law firms, healthcare practices, construction, hospitality, retailers, and high-net-worth individuals. A franchise owner and a construction contractor have almost nothing in common at the ledger level, so a firm serving both has usually seen enough edge cases to handle a new one calmly. That industry breadth says more than any tagline on the page.

Inside the firm's free online tools

Where the site does something a little unusual is its set of free tools. There are six online calculators covering sales tax, S-corp income tax, property tax, business valuation, break-even analysis, and cash flow. A prospective client can plug in numbers before ever picking up the phone, which is a fair way to let people gauge whether a conversation is worth having. Alongside those sit a client portal for uploading documents and an online appointment booking system, so the practical mechanics of becoming a client are handled on the page instead of by a game of phone tag.

S Lewis CPA LLC lists a phone number, a full street address in Naperville, its business hours, and a contact form. For an accountant that address does concrete work: tax and audit clients often need to hand over sensitive paperwork or sit down in person, and knowing exactly where the office sits removes a common hesitation about a first meeting.

Ratings across review platforms

This is where the picture gets complicated, and smoothing it over would not do a reader any favors. S Lewis CPA LLC carries reviews scattered across several platforms, and they do not tell one clean story. Yelp shows sixteen reviews. Birdeye aggregates around ninety-eight. Trustanalytica puts the firm at 4.1 stars, and Experience.com lists Susan Lewis at 4.16 as a financial advisor. Those aggregate numbers land in respectable territory, roughly four out of five, which for a firm of this size and age is neither a red flag nor a triumph.

Complaints about delays and communication

The catch is in the individual reviews under those averages. At least one detailed Birdeye review describes months of delay getting 2023 taxes filed, along with poor communication throughout. The Better Business Bureau profile for S Lewis CPA LLC carries negative reviews too, with clients using words like "substandard" and "terrible experience." These are not vague one-star grumbles; they point at specific failures in responsiveness and turnaround, which are exactly the things a client is paying a CPA to get right. On its own site the firm quotes a testimonial praising staff responsiveness and expertise, and that may well reflect plenty of clients' experience, but it sits in obvious tension with what some outside reviewers report.

The averages and the complaints are both true at once. A practice handling thousands of returns will produce satisfied regulars and a tail of clients who felt dropped during a crunch. Service quality here appears to vary, and the variance seems tied to communication and deadlines more than to technical competence.

What the firm does well

None of that erases what S Lewis CPA LLC clearly does well. The depth of services goes beyond what plenty of firms bother offering, and the practice has survived and grown across nearly four decades of tax-law churn, which is not nothing. A one-person operation does not end up advising franchises, nonprofits, and high-net-worth families by accident.

The thing to weigh is fit against risk. Split reviews about pricing or personality would be easy to shrug off, but for S Lewis CPA LLC, delays and quiet during tax season are the specific worst case for anyone with a hard filing deadline.

Deciding whether this firm fits

A small or mid-sized business owner who wants one firm to carry tax, payroll, and books together has reason to pick up the phone here, and the sensible move is to use that first conversation to pin down turnaround times and who exactly answers client emails during the busy months. High-net-worth individuals and companies weighing a sale or restructuring have a stronger reason to reach out, since that senior-level work is squarely in the firm's wheelhouse. Questions about communication and deadlines, asked directly and answered in writing, are the clearest way to check whether this practice fits before any money changes hands.


Business address
S Lewis CPA LLC
1064 104th Street Suite 108,
Naperville,
Illinois
60564
United States

Contact details
Phone: (630) 548 9600