Tax · Bookkeeping · Payroll · ITIN
Your missing piece to tax-ready books and max refunds.
Personal and business taxes, bookkeeping, payroll, and ITIN applications — handled by an IRS Certifying Acceptance Agent. Work hard. Keep more.
Who we work with
Three starting points,
one standard of care.
Most people arrive in one of these three situations. Wherever you start, the work is the same: accurate numbers, filed on time, with nothing left on the table.
You work for someone else.
- Tax preparation and filing
- Max refund review
- Pay-by-refund, refund advances, flexible payment methods
You work for yourself.
- Maximize Schedule C deductions
- Quarterly estimated tax prep
- Year-round bookkeeping and tax filing
People work for you.
- Full compliance and reporting
- End-to-end business solutions
- Total payroll, admin, and HR support
Our services
Accuracy in every number.
Compliance in every filing.
Pricing depends on what your return or your books actually involve, so we quote it after we understand your situation — never before.
Tax preparation
Your maximum refund starts here.
Federal and state returns for individuals and businesses, prepared by a credentialed preparer. Every return gets a max refund review before it is filed, and we offer pay-by-refund and flexible payment options so cost is never the reason a return waits.
Bookkeeping
Year-round tax strategy for progressive success.
Current, reconciled books every month — not a scramble in March. Clean records mean quarterly estimates you can trust, Schedule C deductions you actually capture, and planning moves you can still make before December 31.
Payroll
We’ll take it from here.
Simple payroll for owners who need the basics done right, or fully managed HR payroll covering workers’ comp, retirement plan syncing, time tracking, and PTO. Payroll is an HR function as much as an accounting one, and we run it that way.
ITIN services
Certified ITIN Acceptance Agent services.
As an IRS Certifying Acceptance Agent, we verify your identification documents in our office so you don’t have to mail original passports or records to the IRS. New applications and renewals, filed alongside your return.
Who we are
The missing piece in your financial life.
We see your finances through a lens of people, value, and strategy. We provide the missing piece in your financial life, transforming financial management from a complex obligation into a clear strategy.
Whether you’re an employee or self-employed, we treat bookkeeping and tax preparation as proactive tools. Our support maximizes your income, eliminates financial confusion, and guarantees an optimized annual tax outcome. Work hard. Keep more. That’s the Interval way.
The core strength of Interval Books is its foundation in Interval Solutions Group, a human resources management, administrative services, and staffing firm focused on bridging the relational gap for clients and employees. We achieved success by offering strategic HR solutions, helping clients find new employees and manage their current staff to cut labor costs, all based on a core understanding of people, value, and strategy.
Interval Books applies this exact philosophy to financial services. We treat bookkeeping and tax preparation as strategic tools, not just compliance tasks. We understand that whether you are an employee, the foundational piece of the modern workforce, or self-employed, you are an individual looking to maximize the value of your work. Our goal is to be the missing piece in your financial life, providing clear, strategic support that eliminates confusion, ensures your tax filing is optimized, and guarantees a confident, accurate annual tax outcome.
Not sure which piece you’re missing?
Tell us what you’re working with and we’ll tell you what it takes — no charge for the conversation.
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Let’s talk about your situation.
Call, email, or stop by the office on Bergenline Ave. We’ll tell you what your return or your books actually need, and what it costs, before you commit to anything.
- Phone201-537-5575
Booking online is coming back
We’re moving to a new scheduling tool. In the meantime, call or email and we’ll get you on the calendar the same day — evenings and Saturdays during tax season.
Bring to your appointment: photo ID, Social Security or ITIN letters for everyone on the return, all W-2s and 1099s, last year’s return, and any bookkeeping records if you’re self-employed.
Call 201-537-5575