Long Island Tax Resolution Services specializes in providing affordable solutions to both individuals and small businesses experiencing back tax problems. These are either IRS tax problems or State tax problems.
Long Island Tax Resolution Services (longislandtaxresolution.com) has 44 customer reviews on Five Star Index, with an average rating of 4.9 out of 5.
Also known as
longislandtaxresolution.com
Website
longislandtaxresolution.com
Category
Accounting & Tax
Location
Bohemia, New York
Listed on Five Star Index
2026
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The company replied to 2% of reviews.
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Most recent review: April 2026.
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A DYNAMIC, RESULTS DRIVEN, TEAM OF STRATEGIC THINKERS.
My wife and I presented our "case" to Mr. James Grennen when both our corporate and personal taxes, resided in a state of complete chaos.
As a consequence of the above, numerous tax liens were placed on our asset accounts and automatic bank withdrawals were occurring.
We had no professional guidance.
At our first meeting, we were impressed by Mr. Grennen's professionalism.
With his abundant knowledge, he outlined his plan of action to both of us. His plan consisted of managing, addressing and ultimately achieving complete resolution of all of our outstanding tax issues.
He was respectful, understanding and reassuring.
Due to Mr. Grennen's precise and methodic detail oriented way of work, in addition to his way of "thinking outside the box", he did resolve all of our tax issues, problems and concerns.
Both my wife and I agree that we will retain Mr Grennen's services for many years to come to ensure our future tax health and compliance.
C. Romero, M.D.
CA
Carol
Knowledgeable and Helpful
Jim has gone above and beyond to help us. He continues to help and reach out to offer his assistance. I could not ask for more.Thank you!
RI
Richard
James Grennen and Long Island Tax resolution eliminated my nightmare with the IRS
I first met James Grennen after I was frustrated, exhausted using those so called fly by night “Tax Resolution” experts and attorneys promising that my situations would go away after I pay a hefty fee. I sat with Jim and I found that he was absolutely blunt , honest and extremely knowledgeable about what my situation and most importantly my avenue of resolution.
He assisted me quickly in becoming compliant with my tax issues and was there every step of the way for all of my questions and most importantly to relieve my stress and fears as one could imagine when dealing with the IRS.
Well of no fault to Jim Grennen I ventured off into a different direction on the advice of a friend I had in Manhattan NY. Jim Grennen had no fault in this, in my mind I just thought I could find a better outcome. WRONG!
I winded up not only paying my friends so called power attorney, for no results( most importantly the same thing James Grennen advised me of) but also committed a worse error in taking on another Tax Resolution expert in Florida (which I will not name). Oh they courted me and promised the world, they had this special relationship with the IRS, they were in the same area where the IRS main office is, so they could walk over and perform the magic they do so well. Well after several more thousands of dollars and no results, I called James Grennen back to request some information the ineffective tax resolution company asked me to retrieve.
When I reach Jim which was immediately, he said he would call me back when he was finished with a client and promptly called me back. I explained what I needed and he immediately in a calm , firm voice he asked me why am I continuing to subject myself to wasting more money just to get the same results he provided me. Well as one could imagine when you are dealing with the IRS and all their pressures you become quite stupid and irrational. There really was no explanation why I did what I did, other than stress and pressure. This is where I quickly understood the difference about James Grennen and those so called Tax Resolution experts.
He had the opportunity to treat me crass and short and not assist me and those actions would have been warranted 1000%. On the contrary, he took the time to speak to me, give me solid advice, explain to me most if not a majority of this issue would be over soon. He assisted me with a plan based on time, explained what would happen and for once in over the 2 years that I wasted my time and money, I finally felt liberated and in control of my IRS issue.
Now mind you a slight warning in a good sense, If you expect to go to James Grennen for your tax issues and think that you will be lied to , manipulated and have things sugar coated and receive a false sense of your IRS issues just disappearing like many of the so called Tax resolution SCAM companies I dealt with overnight , then this Grennen Financial is NOT for you. I am not saying that Jim can’t provide this service for other people with IRS issues , I am sure he can. However my situation was super complicated, I was backed into a corner and he still manage to provide me with an avenue of resolution.
What you can expect is honesty, compassion, and a precise , extraordinary amount of tax resolution knowledge and true assistance in combatting the IRS. You can expect that he will always be there, answer his phone personally or get back to you within a reasonable amount of time. You can expect him to call a spade when it is a spade and most of all be there for you in your time of need. I hope that this testimonial will assist many others in avoiding the many mistakes I made and countless thousands of dollars I wasted with those out of state resolution companies. There is true expert assistance with your IRS resolution needs and it is right here, Grennen Financial Bohemia NY.
I want to add one more thing, I am also proud to call Jim much more than my Tax resolution expert, but a true friend and support mechanism as he assisted me through my horrible ordeal.
Sincerely Yours Stress Free and Liberated
AR
Arthur
No nonsense help with my tax issues
Mr Grennan was diligent, straightforward and patient while dealing with me.
He explained his strategy fully and was quick and effective in his dealings with both the state and federal authorities.
Thank you sir, your work alleviated my worries and the results were impressive.
MG
Marina G.
Fantastic service and great company to deal with. James did everything he promised to do.
I have had problems with the IRS for many years, I lived in fear that my paycheck would be garnished and I wouldn't be able to feed my children. I went to Long Island Tax Resolution at the recommendation of a friend who saw the website. Mr. Grennen and his crew were attentive and gave clear instructions as to what I was supposed to do. He took care of everything and I even got a refund. Thank you for saving my life and returning my sanity.
MB
AJ
ALAN J.
TRUST AND RESPECT
I HAVE BEEN A CLIENT OF JIMS FOR CLOSE TO SIX YEARS MY FIRST MEETING WITH JIM I CALLED IN A PANIC HIS CALM AND GENTLE NATURE PUT ME AT IMMEDIATE EASE, WE TALKED FOR ABOUT AN HOUR THERE WAS NO RUSH HE ANSWERED EVERY QUESTION NO MATTER HOW MANY TIMES I ASKED IT WHEN I LEFT THAT FIRST MEETING I KNEW THAT I HAD FOUND A MAN I COULD RESPECT AND TRUST, WITHIN DAYS JIM HAD PUT A PLAN INTO EFFECT THAT GOT ME GOING IN THE RIGHT DIRECTION. TO THIS DAY WHENEVER I AM IN NEED OF AN ANSWER TO A QUESTION JIM WILL RETURN MY CALL
WITHIN THE HOUR YOU CAN NOT ASK FOR BETTER SERVICE THAN THAT. JIM FOR ALL YOU HAVE DONE FOR ME I TRUST AND RESPECT YOU AND THE COUNTLEES HOURS OF WORK YOU HAVE DONE FOR ME. FOR ALL THOSE WHO ARE IN A SIMILAR SITUATION THISIS THE MAN AND THE TEAM I WANT WORKING FOR ME
ALAN JAMES
FM
Frank M.
The IRS Meets Its Match
Jim and his team were able to resolve my issues with the IRS promptly and courteously. I was very pleased that the stress I experienced was abated quickly. I am now in an installment agreement Jim was able to negotiate. .. Thanks Jim
AL
Ally
Honest, smart, knowledgeable, caring, and reliable
I went to James Grennen with tax issues I didn't think could begin to be resolved. Mr. Grennen thoroughly reviewed all of my information and circumstances, came up with several options, explained each option in a way I could understand, and followed through getting the result I needed in order to get my life back together. I had questions and needed some additional assistance months after he had handled the original issue with which I came to him, and he responded quickly and thoughtfully. I recommend him highly, as cliche as it sounds he truly saved my life and I am so grateful for everything he did for me.