CPA, tax accountant and bookkeeping for New Castle clients, delivered remotely

Sound familiar?

• You want numbers you can act on during the year.

  Current statements show how each month performed while there is still time to respond, not months later.

  22% of the 2022 tax returns filed from the ZIP codes 10514, 10546 and 10549 (Chappaqua, Millwood, Mount Kisco) that serve New Castle reported business or professional income (IRS Statistics of Income, individual income tax statistics by ZIP code, tax year 2022; the ZIP codes extend beyond New Castle).

• You own an S corporation or a partnership.

  The business return and each owner’s return depend on each other. Preparing them together keeps the figures consistent.

  18% of the 2022 tax returns filed from the ZIP codes 10514, 10546 and 10549 (Chappaqua, Millwood, Mount Kisco) that serve New Castle reported partnership or S corporation income (IRS Statistics of Income, individual income tax statistics by ZIP code, tax year 2022; the ZIP codes extend beyond New Castle).

• You want a clearer picture of each property.

  Books kept property by property show what each one earns and costs — and carry straight through to your return.

• Last year’s tax bill came as a surprise.

  Planning through the year gives you a view of where the year is heading before it ends, while there are still choices to make.

Your situation isn’t on this list? Tell us about it — every engagement starts with a conversation.

Services and starting prices.

• 01

  Monthly Accounting

  From $400/mo

  Transaction categorization, account reconciliations, financial statements and regular accounting support.

• 02

  Tax Preparation

  From $300

  Individual returns (federal and one state) from $300; business returns from $750.

• 03

  Accounting + Tax + Planning

  From $900/mo

  Monthly accounting and reporting, business and owner tax returns, proactive tax planning and year-round CPA access.

  Founding Client Rate: $825/month for your first 12 months when you engage by March 31, 2027. Terms

• 04

  Law Firm Accounting

  From $900/mo

  For solo attorneys and small law firms: monthly accounting, financial reporting, business and owner returns, tax planning and CPA consultation.

Starting prices. Your scope and price are agreed in writing before work begins.

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New Castle at a glance

• 1,295

  business establishments with paid employees in the ZIP codes 10514, 10546 and 10549 (Chappaqua, Millwood, Mount Kisco) that serve New Castle

  Source: Census ZIP Code Business Patterns 2023

• 14,440

  tax returns filed for tax year 2022 from the ZIP codes 10514, 10546 and 10549 (Chappaqua, Millwood, Mount Kisco) that serve New Castle

  Source: IRS Statistics of Income, individual income tax statistics by ZIP code, tax year 2022; the ZIP codes extend beyond New Castle

• 26

  law offices with paid employees in the ZIP codes 10514, 10546 and 10549 (Chappaqua, Millwood, Mount Kisco) that serve New Castle

  Source: Census ZIP Code Business Patterns 2023

• 64

  physician offices with paid employees in the ZIP codes 10514, 10546 and 10549 (Chappaqua, Millwood, Mount Kisco) that serve New Castle

  Source: Census ZIP Code Business Patterns 2023

These ZIP codes also cover areas outside New Castle, so ZIP-area figures describe a wider area than New Castle itself.

Tax offices in New Castle

• Town of New Castle Receiver of Taxes

  City business tax and licenses.

  Phone 914-238-4773

  Official website

• New York State Department of Taxation and Finance - Sales tax telephone assistance (businesses)

  State tax and revenue agency.

  Phone (518) 485-2889

  Official website

• IRS Taxpayer Assistance Center - White Plains

  Federal tax help in person.

  210 E. Post Rd., White Plains, NY 10601

  Phone (914) 684-7302

  Official website

The Town of New Castle Receiver of Taxes is the town office for local taxes in Westchester County, New York.

The New York State Department of Taxation and Finance - Sales tax telephone assistance (businesses) is the state office, and IRS Taxpayer Assistance Center - White Plains is the federal one. All three are listed on this page.

Census ZIP Code Business Patterns 2023 counts 54 real estate firms and 26 law offices with paid employees in the same ZIP codes.

Brent keeps the monthly books and prepares the individual and business returns for households and businesses in New Castle.

Source: each office's official website, checked October 16, 2026.

Common questions.

Sources

• Census ZIP Code Business Patterns 2023: establishments with paid employees, by ZIP code.
• IRS Statistics of Income, individual income tax statistics by ZIP code, tax year 2022; the ZIP codes extend beyond New Castle.
• American Community Survey 2023 5-year estimates (survey estimate for the place), for New Castle town, Westchester County, New York.
• U.S. Census Bureau, 2020 ZIP Code Tabulation Area relationship files: which ZIP codes serve the place.
• U.S. Census Bureau county boundary files, 2023; U.S. Office of Management and Budget metropolitan area definitions, July 2023.
• IRS, “State government websites”: the state tax agency link.