Tax Preparation Tips for Small Business Owners

The most useful tax preparation tip for a small business owner is to treat filing season as a handoff, not a project. Get your books current and reconciled, keep business and personal money separate, document what you spend as you spend it, and give your CPA or tax professional one complete, organized package. Most of that work can be done in the last three months of the year, while there is still time to fix what is missing.

One thing up front: Pinstripe does not prepare or file tax returns. We keep the books and hand clean records to our clients' CPAs and tax professionals. These tips cover the work that happens before anyone starts your return. For what you owe, what you can deduct, or which deadlines apply to you, ask your CPA.

Why Start Tax Prep in the Fall?

Because October through December is the last stretch where you can still change things instead of just reporting them. In January you are gathering records for a year that is already closed.

A missing receipt from March is easier to track down in October than in February. A contractor who never sent their tax information is easier to reach while you still work together. And a planning conversation with your CPA only helps if it happens before the year ends, when their calendar is also far more open.

What Should You Do Before Year-End?

Work through this list before the year ends. None of it requires tax expertise, and all of it saves your CPA time.

1. Separate business and personal money. Use a business bank account and card only for the business. If personal spending ran through them this year, flag it now.
2. Get the books current through September. Categorize every transaction and reconcile every bank, card, and loan account to its statement. Then stay current each month.
3. Fill in missing documentation. Find larger expenses with no receipt or no note about their purpose, and fix them while you still remember.
4. Confirm contractor details. Make sure you have current tax information and addresses for anyone you paid outside of payroll, with payments recorded under the right name. Your CPA can tell you what, if anything, needs to be filed for them.
5. List what you bought that will last. For equipment, vehicles, computers, and improvements to your space, keep the invoice, the date you started using it, and any financing documents.
6. Record every tax payment you have made. Estimated payments and any other tax payments, with dates, amounts, and the account they came from.
7. Review your loans. Make sure loan payments are split between principal and interest in the books instead of recorded as one expense, and plan to get year-end statements from each lender.
8. Clean up receivables. Follow up on old unpaid invoices so your books show money you actually expect to collect. Ask your CPA before writing anything off.
9. Count inventory if you carry it. Plan a count close to year-end and record the result.
10. Book a fall meeting with your CPA. Bring a current profit and loss statement and balance sheet.

This list is about tax readiness. For a broader review of profitability and recurring costs, see how to prepare your small business finances before year-end.

How Do You Keep Expense Records Your CPA Can Use?

Record what each expense was for when it happens, and attach the receipt to the transaction instead of saving it in a folder you will sort later.

A bank statement shows a vendor and an amount, not the business purpose. A charge from a warehouse store could be supplies, inventory, a client gift, or something personal. Your CPA decides how each item is treated, but they can only work with what is documented. When records are vague, they have to ask you in March about a purchase from last spring.

Mixed personal and business spending is the biggest version of this problem. Every personal charge in a business account has to be found and pulled out, and every business expense paid from a personal card has to be found and added in. Neither is hard, but both take far longer at year-end than they would each month.

The fix is mostly habit. Bank feeds, categorization rules, and receipt capture apps make it quick to record the purpose when you spend. We covered the setup in how to automate your bookkeeping so tax season is not a mess.

How Do You Avoid a Surprise Tax Bill?

Know roughly how profitable the year has been before it ends, and set cash aside as you go instead of finding it all at once.

In my experience, the surprise is rarely the tax itself. It is that the owner did not know how profitable the year was because the books were months behind. Profit is also not cash. A business can have a strong year on paper and little in the bank if the money went into equipment, inventory, loan principal, or owner draws. We covered that gap in why bad tax prep almost kills small businesses.

A few habits help:

• Keep a running record of every tax payment you have made this year.
• Once your books are current, ask your CPA whether what you have set aside looks reasonable.
• Move tax money into a separate savings account on a regular schedule, so it does not look available in operating cash.
• Put expected tax payments into your cash planning so they do not collide with payroll or a slow month.

Your CPA estimates what you may owe. Planning the cash to pay it without a scramble is part of what a fractional CFO does.

What Should You Ask Your CPA Before the Year Ends?

Ask what they need from you, when they need it, and whether there is anything worth deciding before the year closes. Owners often skip this meeting, and I think it is the most valuable hour of the whole process.

• What documents do you need from me, and in what format?
• When do you need them so we are not rushing?
• Based on my numbers so far, should I be setting aside more?
• Is there anything I should consider doing, or not doing, before the year closes?
• Can my bookkeeper contact you directly with questions?

I would not make a large purchase or change how you pay yourself for tax reasons without this conversation. The right answer depends on your situation, which is exactly what your CPA is for.

What Should You Hand Your CPA After Year-End?

A closed, reconciled set of books plus the documents behind them, delivered in one place. A typical package includes:

• A year-end profit and loss statement and balance sheet.
• Statements for every bank, credit card, and loan account, reconciled through the final month.
• A list of contractors you paid, with totals and their tax information.
• Records of estimated and other tax payments.
• Payroll reports from your payroll provider.
• Invoices and financing documents for major purchases.
• An inventory count, if you carry inventory.
• Notes on anything unusual, such as a new loan, a vehicle sold, or money you put into the business.

Send it as one package, not a trickle of emails. Every question that comes back to you in March is one you could have answered in October.

What If Your Books Are Already Behind?

Start now and work from the oldest month forward. Catching up a few months in October is much easier than catching up a full year in February.

If you are more than a few months behind, cleanup becomes its own project, and our guide to year-end financial cleanup walks through where to start. Once you are caught up, stay current every month so next fall is a review instead of a rescue.

That ongoing work is what our bookkeeping service covers: monthly categorization, reconciliations, and reports, with a clean package for your CPA at year-end. Here is how we work with clients through the year.

Frequently Asked Questions

Is a bookkeeper the same as a tax preparer?

No. A bookkeeper records and reconciles your transactions and produces your financial statements. A CPA or tax professional uses those records to prepare and file your return. Pinstripe does the bookkeeping and works alongside your CPA.

When should a small business start preparing for taxes?

Ideally all year, through monthly bookkeeping. In practice, the fall is the last good window to catch up, confirm details, and talk with your CPA before the year closes.

What if I cannot find a receipt for a business expense?

Look for other records, such as the card statement, an email confirmation, or your account history with the vendor, and note what the purchase was for. Then ask your CPA how to handle it.

Can I do my own small business taxes?

Some owners do. The more complex the business, with employees, inventory, or partners, the more a professional tends to add. Either way, clean books make the job faster.

If you want your books current and ready for your CPA before the year ends, let's talk. We work with small businesses across Long Island and remotely.