# Best Tax Services Providers in Philadelphia, PA ## How Many Tax Services Providers Products Does G2 Track? **Total Products under this Category:** 128 ### Category Stats (Aug 2026) - **Average Rating:** 4.42/5 (↓0.02 vs Jul 2026) The average rating of products in this category, based on all submitted ratings - **Top Trending Product:** 1-800Accountant (+1.98%) - Among all products in this category, 1-800Accountant recorded the largest rating increase compared to last month _Last updated: August 05, 2026_ ## How Does G2 Rank Tax Services Providers Products? **Why You Can Trust G2's Software Rankings:** - 30 Analysts and Data Experts - 900+ Authentic Reviews - 128+ Products - Unbiased Rankings G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category. ## G2 Grid® for Tax Services Providers ![G2 Grid® for Tax Services Providers plotting products by satisfaction and market presence](https://www.g2.com/categories/tax-services/grids.png?focus%5B%5D=1433018&focus%5B%5D=55613&focus%5B%5D=113590&focus%5B%5D=1405496&focus%5B%5D=1466358&focus%5B%5D=1341283&focus%5B%5D=10751&focus%5B%5D=161000) Highlighted products: Swanson Reed | Specialist R&D Advisors, Pilot, PwC, Inkle, Haven, TaxValet, Indinero, and Zeni. Underlying data: [Grid® JSON](https://www.g2.com/categories/tax-services/grids.json?focus%5B%5D=swanson-reed-specialist-r-d-advisors&focus%5B%5D=pilot&focus%5B%5D=pwc-pwc&focus%5B%5D=inkle-2024-11-18&focus%5B%5D=haven-2025-06-02&focus%5B%5D=taxvalet&focus%5B%5D=indinero&focus%5B%5D=zeni) **Sponsored** ### Allego Allego is the market-leading revenue enablement platform teams trust and love. Across the customer lifecycle, Allego helps revenue teams close deals, hit their number, and stay aligned through change by making the next best action clear. Learning, content, coaching, digital selling, and secure, practical AI come together in one natively built platform. Guidance appears directly in everyday workflows so reps know what to say, share, and do when it matters most. Organizations that switch to Allego reduce complexity and lower total software costs by consolidating multiple point solutions into one unified system. Allego Learning: Allego embeds learning into the flow of work so skills show up in real opportunities. AI-powered role play, video practice, and automated coaching help reps build confidence through realistic scenarios with instant feedback. Built-in Conversation Intelligence captures buyer interactions, surfaces risks and opportunities, and connects coaching directly to deal performance. Allego Modern Content: Allego makes content easy to manage, personalize, and activate in selling moments. Centrally governed assets are surfaced through AI-powered search and CRM context so reps can quickly find and share what works. Deep analytics tie engagement to pipeline and revenue outcomes, giving marketing and enablement leaders clear proof of impact. Allego Digital Rooms: Allego Digital Rooms create secure, personalized buyer spaces that streamline engagement across the selling process. Reps and buyers collaborate in branded environments that centralize content, communication, and next steps. AI highlights engagement signals and recommends follow-up actions so opportunities maintain momentum and close faster. Allego takes a human-first approach to AI. Secure, practical AI is embedded across workflows to surface next best actions, highlight deal risks, reinforce messaging, and accelerate follow-up. All AI capabilities are grounded in approved content and governed with enterprise controls. Organizations using Allego report measurable impact, including up to 50% shorter sales cycles, 45% higher win rates, and significant reductions in enablement software spend. Allego is recognized as a Leader in the Gartner Magic Quadrant for Revenue Enablement Platforms and ranked #1 on G2 for Ease of Use and Customer Satisfaction. Learn more at www.allego.com [Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list_llm&secure%5Bcategory_id%5D=801&secure%5Bchosen_at%5D=2026-08-07T06%3A48%3A01Z&secure%5Bdisplayable_resource_id%5D=1033&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=retargeted_product&secure%5Bplacement_resource_ids%5D%5B%5D=23388&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=23388&secure%5Bresource_id%5D=801&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Ftax-services%2Flocations%2Fphiladelphia-pa-us&secure%5Btoken%5D=48ca86bacdd1726d6711cdce0c44aa6471de6ffe98dfa0b9afb41bb8c4d1ab49&secure%5Burl%5D=https%3A%2F%2Fwww.allego.com%2Fschedule-a-demo-of-allego%2F%3Futm_source%3Dg2%26utm_medium%3Dpaid%26utm_content%3Ddemo&secure%5Burl_type%5D=custom_url) ### [Ernst & Young](https://www.g2.com/products/ernst-young/reviews) One of the world's leading professional services organizations, helps companies across the globe to identify and capitalize on business opportunities. **Average Rating:** 4.1/5.0 **Total Reviews:** 20 #### Who Is the Company Behind Ernst & Young? - **Seller:** [Ernst & Young (E&Y)](https://www.g2.com/sellers/ernst-young-e-y) - **Year Founded:** 1989 - **HQ Location:** London - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=340d34cb6814593cb6be46462017d68a16b372058fc6a3ec69bc30c2ac8b9ee0&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fernstandyoung&secure%5Burl_type%5D=linkedin_company_website) 403,177 employees on LinkedIn® #### Who Uses This Product? - **Company Size:** 70% Large, 40% Medium #### What Are Recent G2 Reviews of Ernst & Young? **["Advisory and Implementation"](https://www.g2.com/survey_responses/ernst-young-review-11769267)** **Rating:** 4.0/5.0 stars _— Verified User in Consulting_ [Read full review](https://www.g2.com/survey_responses/ernst-young-review-11769267) **["Good company to work with for rich experience"](https://www.g2.com/survey_responses/ernst-young-review-10658599)** **Rating:** 4.5/5.0 stars _— Aavinashh L._ [Read full review](https://www.g2.com/survey_responses/ernst-young-review-10658599) #### What Are G2 Users Discussing About Ernst & Young? - [Who owns EY India?](https://www.g2.com/discussions/who-owns-ey-india) - [Why is EY famous?](https://www.g2.com/discussions/why-is-ey-famous) - [What is Max Ernst known for?](https://www.g2.com/discussions/what-is-max-ernst-known-for) - [What is Ernst short for?](https://www.g2.com/discussions/what-is-ernst-short-for) ### [KPMG](https://www.g2.com/products/kpmg/reviews) We offer broad management consulting skills including technology enablement. **Average Rating:** 4.2/5.0 **Total Reviews:** 22 #### Who Is the Company Behind KPMG? - **Seller:** [KPMG](https://www.g2.com/sellers/kpmg-e2874d4d-01ea-4fab-aa80-7344e39b9d73) - **HQ Location:** New York - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=6484382897b6c40df8932121e1811ba762577fa5b7c029aabc8189b25bf072fc&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fkpmg-us&secure%5Burl_type%5D=linkedin_company_website) 53,551 employees on LinkedIn® #### Who Uses This Product? - **Top Industries:** Accounting - **Company Size:** 50% Medium, 36% Small #### What Are Recent G2 Reviews of KPMG? **["KPMG - Right Choice"](https://www.g2.com/survey_responses/kpmg-review-8605228)** **Rating:** 4.0/5.0 stars _— Verified User in Consulting_ [Read full review](https://www.g2.com/survey_responses/kpmg-review-8605228) **["The greatest financial service"](https://www.g2.com/survey_responses/kpmg-review-7640920)** **Rating:** 5.0/5.0 stars _— John M._ [Read full review](https://www.g2.com/survey_responses/kpmg-review-7640920) ### [Grant Thornton](https://www.g2.com/products/grant-thornton/reviews) Grant Thornton is a firm that offers three main service including Audit/Assurance, Tax and Advisory to help organizations pursue growth holistically whether through revenue improvement, leadership, mission fulfillment, or innovation. **Average Rating:** 4.8/5.0 **Total Reviews:** 3 #### Who Is the Company Behind Grant Thornton? - **Seller:** [Grant Thornton](https://www.g2.com/sellers/grant-thornton) - **Year Founded:** 1924 - **HQ Location:** Chicago, Illinois, United States - **Twitter:** @ThorntonBenefit 373 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=b6e5e65f1df963cfe91bd14ee1afb9a6588d1f66fc33ce7833dbe4b1f05e48a4&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fgrant-thornton-us&secure%5Burl_type%5D=linkedin_company_website) 11,671 employees on LinkedIn® #### Who Uses This Product? - **Company Size:** 100% Large #### What Are Recent G2 Reviews of Grant Thornton? **["Grant Thornton are trusted advisors whom help us implement industry leading solutions"](https://www.g2.com/survey_responses/grant-thornton-review-9754512)** **Rating:** 4.5/5.0 stars _— Joanthan F._ [Read full review](https://www.g2.com/survey_responses/grant-thornton-review-9754512) **["Indeed Big 5 !"](https://www.g2.com/survey_responses/grant-thornton-review-7498002)** **Rating:** 5.0/5.0 stars _— Prasad B._ [Read full review](https://www.g2.com/survey_responses/grant-thornton-review-7498002) #### What Are G2 Users Discussing About Grant Thornton? - [What is Grant Thornton used for?](https://www.g2.com/discussions/what-is-grant-thornton-used-for) ### [EisnerAmper](https://www.g2.com/products/eisneramper/reviews) EisnerAmper is one of the nation's leading audit, tax and advisory firms with offices in NY, NJ, FL, PA, CA and the Cayman Islands. #### Who Is the Company Behind EisnerAmper? - **Seller:** [EisnerAmper](https://www.g2.com/sellers/eisneramper) - **HQ Location:** New York, New York, United States - **Twitter:** @EisnerAmper 4,111 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=fd54778d5dac681b72e456e1173bbe760cc5650276d63577e64b9cd11ebd29ae&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F162443&secure%5Burl_type%5D=linkedin_company_website) 3,966 employees on LinkedIn® ### [Friedman LLP](https://www.g2.com/products/friedman-llp/reviews) Friedman LLP is an accounting and consulting firm that provide services including tax, accounting, auditing, forensic and management advisory services to help publicly/privately held companies and individuals. #### Who Is the Company Behind Friedman LLP? - **Seller:** [Friedman](https://www.g2.com/sellers/friedman-cd1ea5b2-90d5-4aa3-ab91-cc72b22e7ff8) - **Year Founded:** 1924 - **HQ Location:** New York, US - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=d983aac864ffbc6e40f533103a22f588fa38054dc86be27144bae1ec1bd7e983&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Ffriedman-llp%2Fabout%2F&secure%5Burl_type%5D=linkedin_company_website) 250 employees on LinkedIn® ### [Marcum LLP](https://www.g2.com/products/marcum-llp/reviews) Marcum LLP is one of the largest independent public accounting and advisory services firms in the nation, with offices in major business markets throughout the U.S., as well as Grand Cayman, China and Ireland. #### Who Is the Company Behind Marcum LLP? - **Seller:** [Marcum](https://www.g2.com/sellers/marcum) - **Year Founded:** 1951 - **HQ Location:** New York, New York, United States - **Twitter:** @MarcumLLP 8,623 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=27c3e90d7423d2e1f9575410aeae6c7a904917f6aaaeb7614ce57e9f8bf2269c&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F21984&secure%5Burl_type%5D=linkedin_company_website) 1,424 employees on LinkedIn® ### [WeiserMazars LLP](https://www.g2.com/products/weisermazars-llp/reviews) WeiserMazars specializes in accounting, tax and advisory with 700 professionals in 10+ US offices. #### Who Is the Company Behind WeiserMazars LLP? - **Seller:** [WeiserMazars](https://www.g2.com/sellers/weisermazars) - **HQ Location:** New York, NY - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=7886df2ed926834e5eb248c77dcfa8e5c815d3ab1f0fe3132ced0dba45868834&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2FNo-Linkedin-Presence-Added-Intentionally-By-DataOps&secure%5Burl_type%5D=linkedin_company_website) 1 employees on LinkedIn® ### [WithumSmith+Brown](https://www.g2.com/products/withumsmith-brown/reviews) WithumSmith+Brown is a firm that empowers clients with innovative tools and solutions to address their accounting, tax and consulting needs it offers deep industry expertise and service experience to help clients grow and thrive to Be in a Position of Strength. #### Who Is the Company Behind WithumSmith+Brown? - **Seller:** [WithumSmith+Brown, P.C.](https://www.g2.com/sellers/withumsmith-brown-p-c) - **Year Founded:** 1974 - **HQ Location:** Princeton, New Jersey, United States - **Twitter:** @WithumCPA 2,711 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=272a43e6dc103a5cb0df1d904ae51e25156d96b0cd22f0e653bbf512024a432d&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fwithumsmith-brown&secure%5Burl_type%5D=linkedin_company_website) 2,753 employees on LinkedIn® Spotlight Categories [Board Management Software](https://www.g2.com/categories/board-management) [Contact Center Quality Assurance Software](https://www.g2.com/categories/contact-center-quality-assurance) [Workforce Management Software](https://www.g2.com/categories/workforce-management) [Accounting Software](https://www.g2.com/categories/accounting) [SMS Marketing Software](https://www.g2.com/categories/sms-marketing) Similar Categories - [409A Valuations Providers](/categories/409a-valuations-providers) - [Accounting Firms](/categories/accounting-firms) - [Auditing Services](/categories/auditing-services) - [Bookkeeping Services](/categories/bookkeeping-services) - [Business Process Outsourcing (BPO) Service](/categories/business-process-outsourcing-bpo-service) - [Enterprise Performance Management (EPM) Consultants](/categories/enterprise-performance-management-epm-consultants) - [Financial Consulting](/categories/financial-consulting) - [Investment Firms](/categories/investment-firms) - [Other Business Finance](/categories/other-business-finance) - [Tax Credit Providers](/categories/tax-credit-providers) [Browse Tax Services Themes](/categories/tax-services/themes) ![Nathan Calabrese](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Nathan Calabrese") NC Researched and written by [Nathan Calabrese](https://research.g2.com/insights/author/nathan-calabrese) Updated October 3, 2024 Tax services are offered by firms which specialize in filing and preparing taxes. Often these services are provided by [accounting firms](https://www.g2.com/categories/accounting-firms). Tax firms use their in-depth understanding of complex regulations to offer expertise and guide corporations through the tax process. These services can often save businesses time and money, as well as help ensure legal compliance. Corporations will usually work with firms year-round but will have the most contact in the time leading up to important state and federal tax deadlines. Businesses of all sizes and industries work with these providers and generally assign their accounting departments to coordinate with the firm. Show More