Top 7 Tax Prep Services for Small Businesses (2025)

Filing taxes for your small business in 2025 is more complex than ever. With new IRS rules, updated 1099 reporting thresholds, and expanded deductions under the One Big Beautiful Bill (OBBB) Act, small business owners face an overwhelming amount of compliance work. Missing deadlines or overlooking deductions can result in penalties—or worse, lost savings that could have been reinvested back into your business.

That’s why many entrepreneurs turn to professional tax preparation services to keep them on track. The right partner can help ensure accuracy, maximize deductions, and save valuable time. In this guide, we’ll compare the top seven tax prep services for small businesses in 2025 and explain why 1-800Accountant, America's leading virtual accounting firm, stands out as the best overall choice.

Key Highlights

  • Small business tax preparation in 2025 is more complicated due to new rules and reporting requirements.

  • Professional tax prep services can help owners file accurately, avoid IRS penalties, and claim every available deduction.

  • 1-800Accountant is the best tax service for small businesses thanks to tax-deductible, flat-rate pricing, dedicated CPAs and tax professionals, and average client tax savings of over $12,000 annually.

  • Other services, such as H&R Block, TurboTax, and Bench, offer alternatives ranging from do-it-yourself (DIY)-friendly tools to bookkeeping-first models.

  • When selecting a service, consider expertise in serving small businesses, pricing transparency, the level of support provided, and compliance assistance.

1. 1-800Accountant – Best Overall for Small Businesses

Why it’s #1: 1-800Accountant is a full-service virtual accounting firm built for small businesses. Unlike software-only tools, clients are matched with dedicated CPAs, EAs, bookkeepers, and tax professionals who are familiar with their state and industry, and who will thoroughly understand their businesses. They can handle your personal and business taxes, safely store your business tax docs, expense tracking, and minimize your tax liability with their maximum refund guarantee.

Services offered:

Key differentiators:

Best for: Entrepreneurs, freelancers, and small business owners seeking efficient, centralized support. Year-round tax planning services, industry-specific deduction analysis, locating specific tax forms, and year-round tax support are also available.

2. H&R Block

H&R Block is a household name with DIY small business tax software, professional in-person assistance, and tax threshold and OBBB support. 

Pros:

  • Strong nationwide recognition

  • Retail offices available for face-to-face help from an H&R Block advisors accountant

  • Decent online software tools for simple income reporting

Cons:

  • Less tailored for small business tax situations compared to 1-800Accountant

  • Advisory services are not as comprehensive for complicated tax situations

Best for: Small businesses that prefer a hybrid of DIY software and potential in-person support.

3. TurboTax Business (by Intuit)

TurboTax Business remains one of the most popular DIY tax filing tools with live CPA assistance for small businesses during income tax season. 

Pros:

  • Easy-to-use interface

  • Seamless integration with QuickBooks tax preparation software

Cons:

  • CPA review add-ons increase costs quickly

  • Heavy DIY elements may overwhelm small business owners with complex returns

Best for: Business owners who already do their own taxes using QuickBooks and feel comfortable with a mostly DIY approach.

4. Mainstreet (Bookkeeping + Taxes)

Mainstreet, formerly known as Bench, is primarily used for its bookkeeping-first model, with tax filing offered as an add-on feature.

Pros:

  • Clean, intuitive bookkeeping services

  • Integrated bookkeeping and tax prep in one place

Cons:

  • Limited advisory and payroll support

  • Less comprehensive than 1-800Accountant’s full-service approach

Best for: Businesses that prioritize bookkeeping but still want bundled tax filing support.

5. Block Advisors (H&R Block Small Business Division)

Block Advisors, while not as well-known, is H&R Block’s dedicated division for small business tax help. 

Pros:

  • In-person and virtual CPA service options

  • More advisory-focused than standard H&R Block

Cons:

  • Higher pricing for dedicated business support

  • Still lacks the desirable all-in-one model of 1-800Accountant

Best for: Small businesses that want brand recognition and flexible support options.

6. TaxAct

TaxAct is a budget-friendly tax prep software for cost-conscious business owners.

Pros:

  • Lower cost than online tax software like TurboTax or H&R Block

  • Simple interface for straightforward returns

Cons:

  • Minimal support for complex filings

  • Not well-suited for businesses with employees, contractors, or multiple tax deductions

Best for: Small businesses with very simple tax needs that want the lowest-cost option available.

7. Liberty Tax

Liberty Tax operates on a franchise model, offering in-person tax prep services across many major U.S. cities.

Pros:

  • Widely available through local franchises

  • In-person assistance can feel more personal

Cons:

  • Quality varies depending on location

  • Not a virtual-first solution, limiting flexibility and reach

Best for: Business owners who want to work with a local tax pro with home tax expertise in their community.

How to Choose the Right Tax Prep Service for Your Business

With seemingly more tax prep services in 2025 than ever before, selecting the best option for your small business operations can feel like a daunting task. If you don't know where to begin, consider the following:

  • Expertise with small businesses: Not all providers specialize in business tax law. Look for services built with entrepreneurs in mind.

  • Pricing transparency: Flat-rate pricing can help avoid accumulating hourly bills that can add up quickly.

  • Level of support: Do you need year-round guidance, payroll support, or proactive advisory services?

  • IRS compliance for small businesses and deadlines: Stay aware of upcoming small business tax deadlines. For example, the next key dates include:

    • Sept 15, 2025 – Q3 quarterly tax estimates for individuals and pass-throughs

    • Oct 15, 2025 – Extended filing deadline for C corporations and individuals

    • Jan 31, 2026 – W-2s and 1099-NECs due to employees and contractors

Why 1-800Accountant stands out: It checks every box with dedicated CPAs, EAs, bookkeepers, and tax professionals, transparent flat-fee pricing, and comprehensive services that keep businesses compliant throughout the year.

Next Steps

From DIY platforms like TurboTax and TaxAct to innovative, full-service financial firms like 1-800Accountant, small business owners, whether operating as a sole proprietorship or an S corp, have more options than ever. However, if you're looking for expert CPAs and tax professionals, predictable pricing, audit support, and proven tax savings, 1-800Accountant is the clear choice for your small business operations.

Take the next step: Schedule a free 30-minute consultation with 1-800Accountant to discover how much your business could start saving today.

This post is to be used for informational purposes only and does not constitute legal, business, or tax advice. Each person should consult his or her own attorney, business advisor, or tax advisor with respect to matters referenced in this post. 1-800Accountant assumes no liability for actions taken in reliance upon the information contained herein.