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Coston and McIsaac Coston and McIsaac
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38 Years
experience
Trusted Accounting Services in Bar Harbor, ME
Coston and McIsaac has been delivering personalized financial guidance to individuals and businesses for 37 years. Our expertise spans tax management, accounting services, financial planning, and specialized solutions like IRS representation and QuickBooks integration. We prioritize professionalism, responsiveness, and quality, ensuring clients receive tailored support aligned with their unique needs. With deep industry knowledge across construction, healthcare, law, and real estate, we combine technical proficiency with a client-centric approach.

Our commitment to continuous learning and ethical standards positions us as a trusted partner in navigating complex financial landscapes. By focusing on long-term relationships and proactive strategies, we empower clients to achieve sustainable growth and compliance.
Services
Personal Financial Planning Retirement Planning Estate Planning Elder Care Wealth Management Small Business Accounting Bookkeeping Services Payroll Tax Preparation IRS Audit Representation
Details
  • Year established: 1988
Highlights and features
  • We have over 37 years of experience in accounting and tax services.
  • Our team provides personalized attention to each client.
  • We are known for professional and responsive service.
  • We offer expertise in tax relief and IRS representation.
  • Our firm serves diverse industries with specialized knowledge.
What people say
Leading firms Personal and professional attention Professional and responsive Quality service
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Services
Tax Preparation
We offer comprehensive tax preparation for individuals and businesses, ensuring compliance with evolving IRS regulations. Our team identifies deductions and credits to minimize liabilities while avoiding penalties. With expertise in cryptocurrency reporting and IRS audit representation, we provide peace of mind through accurate, timely filings tailored to your financial situation.
Financial Planning
Our financial planning services create customized roadmaps for retirement, estate management, and wealth preservation. We analyze risk tolerance, income streams, and long-term goals to develop strategies that balance growth with security. By integrating tax-efficient solutions, we help clients build sustainable financial futures aligned with their personal or business objectives.
IRS Representation
We specialize in resolving IRS issues including audits, liens, levies, and payment plans. Our team negotiates on your behalf to reduce back taxes owed and establish manageable repayment terms. With proactive communication and compliance guidance, we alleviate stress while protecting your financial interests during complex tax disputes.
Bookkeeping
Our bookkeeping services maintain precise financial records for small businesses, ensuring accurate tracking of income and expenses. We implement efficient systems for payroll, cash flow management, and financial reporting, enabling data-driven decisions. By organizing transactions monthly or quarterly, we prepare businesses for audits and strategic growth opportunities.
QuickBooks Support
We provide QuickBooks setup, training, and system optimization for businesses transitioning to digital accounting. Our team customizes software to match operational workflows, trains staff on efficient usage, and performs periodic tune-ups to maintain accuracy. This streamlines financial management, reduces errors, and improves reporting capabilities for informed business decisions.
Questions
What accounting services do you offer for small businesses?
We provide bookkeeping, payroll, financial statements, cash flow management, and tax compliance services tailored to small businesses.
Can you help with IRS tax debt issues?
Yes, we offer IRS audit representation, payment plans, lien/levy resolution, and tax debt reduction strategies to resolve back taxes owed.
Do you specialize in any industries?
We serve construction, healthcare, law firms, real estate, and manufacturers with industry-specific accounting and tax planning expertise.
What QuickBooks support is available?
We offer software setup, employee training, system tune-ups, and troubleshooting to optimize QuickBooks for your business operations.
How do you handle estate and retirement planning?
We create customized plans addressing tax efficiency, asset distribution, and long-term financial security for retirement and estate management.