Sienna Tax Co.

Est. 2004


How confident are you that you got all the tax benefits you deserve from your last tax preparer? Don’t lose out on your money, let’s get your taxes done right!

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Our company offers a wide range of services to our individual and business clients throughout Massachusetts. We work with each client one-on-one and offer a personalized solution to each client’s needs. We offer tax preparation, accounting and consulting, done in a customized, convenient and timely manner.


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  • Tax Planning & Preparation
  • Individual Tax Returns
  • Business Tax Returns
  • Foreign Income Tax Returns
  • US Non-Resident Alien Income Tax Returns
  • Sales Tax Services
  • IRS Tax Resolutions
  • Business IRS Tax Election


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  • General Ledger & Financial Statement Preparation
  • Bookkeeping (Monthly/Quarterly/Annual) Personal & Business
  • Accounting system setup for new businesses
  • Computerized payroll services (W-2,1099 preparation and E-file)
  • Business tax return preparation (Sales & Use/Business Property)
  • Personal financial statements
  • Cash Flow & Budgeting Analysis
  • Financial Forecasts & Projections
  • Financial Institution Compilation Letters
  • Partnership Agreements
  • Forensic Accounting


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  • Accounting software selection and implementation
  • Type of entity selection and restructuring (LLC, LLP, S-Corp, C-Corp)
  • Business Dissolution
  • Business valuations
  • Tax implications of buying/selling a business
  • Computer system/ Internal Control Implementation
  • Financial decisions, projections and forecasts
  • Gift planning
  • Real Estate Buy-Sale
  • Real Estate Development-Flipper-Investor


Lodxhiana Katro Wojtczak

Lodxhiana Katro Wojtczak, or “Loxhi”, is the founder and owner of Sienna Tax Co.  Loxhi graduated with a Bachelor of Science Degree in Accounting from Newbury College in 2006.  She obtained a Master of Science Certificate in Forensic Accounting from Northeastern University in 2009, and earned a Master in Business Administration from Curry College in 2010.

Rewind back to 2003 when Loxhi began preparing individual tax returns as part of the IRS approved Volunteer Income Tax Assistance (VITA) program and the Tax Counseling for the Elderly (TCE) program.  Her passion for helping people through this program and interest in taxation led her to open her own tax business in 2004.  In addition to taxation, Loxhi also has extensive accounting and contract auditing experience, she’s a Notary Public and a member of American Association of Notaries and Association of Certified Fraud Examiners.  Loxhi is a Certified QuickBooks ProAdviser and certified in QuickBooks Online.

Our services include individual and business tax preparation, complete business accounting solutions, small business consulting services, tax planning for corporations and partnerships.

With over 15 years of experience, clients can trust us to provide them with extensive knowledge of tax codes and regulations; the understanding and advice needed to solve complex financial situations, and minimizing tax liabilities.  By being a small business, we can form a friendly, individualized business relationship.

Our mission is to serve you by providing the highest level of expertise and professionalism possible.  We look forward to collaborating with you on your unique taxation needs. We’re proud to serve clients throughout Massachusetts. 

Companies & People I’ve Worked with

“We’ve been working with Loxhi for about 4 years now and her service is top notch.”

“We’ve been working with Loxhi for about 4 years now and her service is top notch. We have residences in different states, own a small business and work corporate jobs so our taxes are always complicated. Fortunately, Loxhi has kept things simple for us while maximizing our returns. More importantly, she’s always been very responsive when we’ve needed things done in a timely manner. If you’re looking for a
knowledgeable professional who is always honest and friendly, we’d recommend Loxhi for all your accounting needs.”

Jeremy Sallee

Founder, Freeman Plat

“We have been using Loxhi for a few years now to handle our home and business taxes. She helped us gather every document needed and walked us through many expenses we didn’t know we could claim. She has made our lives much easier come tax time and will continue to use her in the coming years.”

James and Marielys Callahan

Partners , LuLaRoe Marielys

“I worked with Loxhi for 2 years prior to establishing my Florida Medical Clinic in 2019, to ensure accounting, tax forms, reporting’s and documents were in order. I am very confident, pleased and happy to work with her. She has been diligent, very thorough, and easy to work with. She has educated me regarding the start of my business, implementing the accounting system software, payroll, bookkeeping and also educated me with many aspects of running an LLC and S Corporation and its tax ramifications. I continue to heavily rely on her expertise and advice for every business accounting and tax need.”

Anas Al Yazji MD

Director, Tuka Pediatrics

“Loxhi has been providing tax and consulting services for all our real estate development projects and properties since 2003. From helping us establish our LLCs to making solid accounting recommendations Loxhi’s expertise and professionalism are second to none! Additionally, she is very timely, detailed and efficient when dealing with IRS audits. We are confident and see Sienna Tax Co. as an extension of our business, where Loxhi is always looking for ways to improve our bottom line by ensuring compliance while maintaining a high level of integrity.”

Michael Gumbs

Owner/Project Manager, Gumbs Investment Inc.

“Loxhi has been my accountant for over 8 years and assisted me with all my personal and business taxes through different career paths. From a real estate professional to a corporate employee, she has provided valued advice with my write offs, foreign money transfers and dependents. She is easy to communicate with and understand. She has been an advocate for my rights and fought several tax issues and penalties against me, that were imposed due to the work of my previous tax preparer all with success in my favor. My confidence in her as a tax professional is undeniable. It is a pleasure working with her.”

Rina Stermilli

Real Estate Adviser

“Loxhi is absolutely fantastic. I have used her services for the past four years because of her customer service, knowledge and advice. About two years ago I moved and had to get a new tax preparer, however, my experience with this preparer was nothing compared to Loxhi’s services. As a result, I reached out to Loxhi again and I haven’t used anyone else ever since. I highly recommend her.”

Antonia Darosa

“Loxhi has been doing my taxes for over 15 years now. I don’t know what I would do without her! She is professional, knowledgeable, responsive and easy to work with. She helps me to understand the complicated world of taxes. She asks the right questions to ensure I am maximizing my deductions. She even followed up with me on a return from a few years ago that I completely forgot about and I was able to amend the return and get a refund that was owed to me.  What I am most impressed with is she takes the time to explain things and you get the sense that she truly cares about her clients. She is the best!”

Sheanah McCarthy

Real Estate Investor



Having trouble finding a personalized tax company with a preparer who you trust?

We’re here to help! 


(617) 645-1576


Stoneham, MA