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1495 Merchant Drive, Algonquin, IL 60102Mon–Thu 9–4 · Fri 9–12
Algonquin Accounting Service, Inc.
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Tax services

Tax planning and preparation for every kind of return.

Individuals, corporations, partnerships and LLCs — prepared accurately, explained clearly, and filed electronically for free.

Individuals & families

Individual tax consulting, planning & preparation

Whether you have a single W-2 or a mix of wages, investments, rental property and side income, we prepare your federal and Illinois returns with care — and look for every credit and deduction you’re entitled to.

  • Federal 1040 and Illinois IL-1040 returns, including multi-state filers
  • Retirees, Social Security and pension income — including whether you need to file at all
  • Investment, rental property and self-employment income
  • Year-round planning: withholding check-ups and estimated payments
Businesses

Business tax returns for every structure

We prepare and plan for all five major business filing types, and we coordinate your business and personal returns so nothing falls through the cracks.

IndividualsForm 1040 · Schedule C sole proprietors
C CorporationsForm 1120 · IL-1120
S CorporationsForm 1120-S · IL-1120-ST · K-1s
PartnershipsForm 1065 · IL-1065 · K-1s
Limited Liability CompaniesTaxed as sole prop, partnership or corporation
Catch up

Multi-year tax assistance

Behind on filing? It happens more often than you’d think. We help you gather what’s needed, prepare prior-year returns, and work with the IRS and Illinois Department of Revenue to get you current — often with less stress and cost than you feared.

If you’ve received an IRS notice, bring it with you. See penalty abatement assistance.
Included

Free electronic filing

Every return we prepare is filed electronically at no extra charge, with refunds direct-deposited into your bank account — the fastest, safest way to get your money.

Be prepared

What to bring to your tax appointment

Not sure you have everything? Bring what you have — we’ll tell you what’s missing.

Personal

  • Last year’s federal & state returns
  • Photo ID and Social Security numbers for everyone on the return
  • Bank routing & account number for direct deposit
  • Any IRS or state notices received

Income

  • W-2s from every employer
  • 1099s — interest, dividends, brokerage, NEC/MISC, retirement (1099-R), SSA-1099
  • K-1s from partnerships, S corps or trusts
  • Rental income and expense records

Deductions & credits

  • Mortgage interest (1098) and property tax bills
  • Charitable donation receipts
  • Child care provider name, address & EIN
  • Tuition (1098-T), student loan interest, HSA forms

Business owners

  • Profit & loss and balance sheet, or bank statements
  • Payroll reports and 1099s issued
  • Vehicle mileage log
  • Asset purchases and sales during the year

Estimated payments

  • Dates and amounts of federal estimates
  • Illinois estimated payments
  • Prior-year overpayment applied

Life changes

  • Marriage, divorce or a new baby
  • Bought or sold a home
  • Started a business or retired
  • Health insurance marketplace forms (1095-A)
Tax calendar

Key federal deadlines

Dates shift to the next business day when they fall on a weekend or holiday. We’ll remind you.

January 31W-2s, 1099-NEC & Form 940Employer and contractor forms due; Q4 Form 941 due.
March 15S corps & partnershipsForms 1120-S and 1065 due (or extend).
April 15Individuals & C corpsForm 1040, 1120 and first-quarter estimates due.
QuarterlyEstimates & Form 941Estimates Jun 15, Sep 15, Jan 15 · 941s Apr 30, Jul 31, Oct 31.
FAQ

Common questions

Do I even need to file this year?

It depends on your income, filing status and age. Many retirees living mainly on Social Security don’t have to file — give us a call and we’ll tell you, at no charge.

How long does it take to get my refund?

With free e-file and direct deposit, most federal refunds arrive within about three weeks of acceptance. Paper returns take considerably longer.

Can you help if I haven’t filed in several years?

Yes. Multi-year assistance is one of our specialties. We’ll reconstruct what’s needed, prepare the missing returns and help resolve any penalties.

Do you prepare both my business and personal returns?

Absolutely — and we recommend it. Coordinating both returns is how we catch planning opportunities and avoid mismatches.

What if I get a letter from the IRS after you file?

Bring it in. We’ll review the notice, explain what it means and respond on your behalf when appropriate.

Ready for tax season?

Appointments fill up fast between February and April. Call now to reserve your time.

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