By the Templateez Team · Licensed Attorney · June 2026

Intake Forms for Accountants and Tax Preparers: Engagement, Compliance, and Client Data Collection

Tax season does not arrive gradually. It arrives like a deadline with legs. From mid-January through April 15, every accounting firm and solo tax preparer in the country is operating under the same immovable constraint: the IRS does not care that your client forgot to bring their K-1, that their crypto exchange shut down without issuing a 1099, or that they only just realized they worked in three states last year. The return is due when it is due, and the preparer’s name goes on it.

That seasonal pressure makes intake the single most consequential process in a tax practice. Every piece of information you fail to collect in January becomes a frantic phone call in March. Every engagement term you leave ambiguous becomes a scope dispute in April. Every compliance question you skip becomes a Circular 230 problem you did not see coming. A structured intake form is not a nice-to-have for accountants and tax preparers — it is the infrastructure that determines whether the busiest four months of the year run on rails or run off them.

The engagement letter starts at intake

Before you touch a single tax document, the engagement scope needs to be defined in writing. This sounds obvious. In practice, it is the step most often skipped or handled with a vague email that says “looking forward to working with you this tax season.” That is not an engagement letter. That is a liability.

A proper tax engagement captured at intake defines several things explicitly:

• Scope of services — tax preparation only, or also advisory? Bookkeeping? Payroll? Are you preparing the federal return only, or state returns as well? Are you filing the return electronically, or is the client mailing it? Each service is a separate line of engagement with separate responsibilities.
• Fee structure — flat fee per return, hourly, or value-based pricing? What triggers additional fees? Does an amended return cost extra? Does a late-arriving document that requires rework carry a surcharge? Clients who know the fee structure at intake do not dispute it in April.
• IRS representation scope — does the engagement include representation if the IRS audits the return? Most tax prep engagements do not include audit representation unless it is separately priced and agreed to. Clients assume it does. The engagement letter clarifies this before it matters.
• Preparer responsibilities and limitations — the client provides the data, the preparer relies on it. IRC §6694 imposes preparer penalties for understating tax liability, but the preparer’s obligation is due diligence on the information provided, not independent investigation. The engagement letter at intake should make clear that the preparer is not auditing the client’s records — the preparer is preparing a return based on what the client represents to be true.
• Document deadlines — when must the client provide all documents? What happens if they miss the deadline? Is the firm obligated to file an extension? Who is responsible for the extension filing fee, if any? These are the questions that generate the most conflict in tax season, and they should be answered at intake, not argued about on April 10.

The engagement letter is not a separate document from the intake process. It is the output of it. The intake form captures the scope, the client acknowledges the terms, and the engagement is defined before work begins. Firms that treat intake and engagement as separate workflows end up with clients who were “onboarded” but never properly engaged. For a deeper look at how intake forms set client expectations from day one, our related guide covers the mechanics across professions.

Individual tax prep intake: more than name and Social Security number

The baseline data for an individual tax return is straightforward: name, SSN, date of birth, filing status, address. Every preparer collects that. The intake form earns its value in what it captures beyond the baseline.

Filing status and dependents. Filing status is not a simple dropdown. It requires knowing marital status as of December 31, whether the client qualifies as head of household (which requires a qualifying person and paying more than half the cost of maintaining the home), and whether a divorce decree or separation agreement affects filing status. For dependents, the intake needs full names, Social Security numbers, dates of birth, relationship to the taxpayer, and whether any other person is claiming the same dependent — the custody-related dependency rules under IRC §152 are a common source of rejected returns when both parents claim the same child.

Income sources. The modern income landscape is nothing like the W-2-only world that intake forms were built for twenty years ago. A comprehensive individual intake captures:

• W-2 employment income (number of employers, any mid-year job changes)
• 1099-NEC and 1099-MISC (independent contractor and freelance income)
• 1099-INT and 1099-DIV (interest and dividends)
• Schedule K-1 income from partnerships, S-Corps, and trusts
• Rental property income (number of properties, any new acquisitions or dispositions)
• Cryptocurrency transactions (exchanges used, whether the client received any staking or airdrop income, whether they used crypto for purchases)
• Gig economy income (rideshare, delivery, freelance platforms — many of which may not issue 1099s if earnings fall below the reporting threshold, but the income is still taxable)
• Retirement distributions, Social Security benefits, pension income
• Gambling winnings (W-2G or unreported)
• Sale of assets (stocks, real estate, personal property)

Each of these income types has its own form, its own reporting rules, and its own set of follow-up questions. A client who mentions “a little crypto trading” at intake needs to be asked about the specific exchanges, the number of transactions, whether they have transaction-level records, and whether they received any Form 1099-DA or 1099-B from those exchanges. A client who mentions rental income needs to be asked about depreciation elections, passive activity limitations, and whether they qualify for the real estate professional exception. The intake form is where these threads get identified so the preparer can pull them before the return is due.

Deduction preferences and life changes. Standard deduction versus itemized is not just a calculation — it is a conversation that should happen at intake. The intake form should capture whether the client has significant mortgage interest, state and local taxes above the $10,000 SALT cap, charitable contributions (cash and non-cash), unreimbursed medical expenses, and any other potential itemized deductions. It should also flag life changes since the prior year: marriage, divorce, new baby, home purchase, home sale, job loss, retirement, inheritance, or relocation. Each of these events has tax consequences that the preparer needs to know about before starting the return, not after discovering them on page four of a half-finished draft.

Estimated tax payments. Clients who made estimated payments need to report the amounts and dates. Clients who should have made estimated payments but did not need to know about the underpayment penalty before they see their balance due. The intake form captures both: payments made and whether the client’s situation suggests payments should be set up for next year.

Business tax prep intake: a different animal

Business returns require a fundamentally different intake than individual returns. A sole proprietorship filing a Schedule C is not the same engagement as an S-Corp filing Form 1120-S, and an S-Corp is not the same as a multi-member LLC taxed as a partnership filing Form 1065. The intake form must capture the entity type, the EIN, the fiscal year end, and the basis for the entity’s tax classification — because a surprising number of business owners do not actually know how their entity is taxed.

Beyond the basics, a business intake captures:

• Revenue range and industry — the NAICS code matters for IRS statistical comparisons, and the revenue range determines which deductions and credits are available (the qualified business income deduction under §199A has income-based phase-outs that differ by industry).
• Number of employees and payroll provider — payroll tax compliance is a separate obligation from income tax, and the preparer needs to know whether payroll is handled in-house, through a PEO, or through a payroll service. Payroll tax deposits, W-2 filings, and quarterly 941s are all on their own deadlines.
• State filing requirements — a business that operates in multiple states may have nexus obligations that create filing requirements beyond the home state. Sales tax nexus, income tax nexus, and franchise tax obligations each have their own thresholds, and the intake form is where the preparer identifies which states are in play.
• Related entities — does the business owner have other businesses? Are there intercompany transactions? Related-party transactions have their own reporting requirements and are a common audit trigger.
• Prior year issues — any carryforward losses, unused credits, or depreciation schedules that affect the current year need to be identified at intake, not discovered mid-preparation.

The questions clients do not volunteer answers to

There is a category of intake information that clients will not tell you unless you ask directly. Not because they are hiding anything — though some are — but because they do not think it is relevant, or because they are embarrassed, or because they genuinely forgot.

Unfiled prior returns. A client who has not filed for two or three years is not going to lead with that information. The intake form must ask explicitly: are all prior year returns filed? If not, which years are outstanding? The IRS Automated Substitute for Return (ASFR) program will eventually file a return on the taxpayer’s behalf, usually without the deductions and credits the taxpayer was entitled to. A preparer who discovers unfiled returns mid-engagement has a scope problem and a compliance problem simultaneously.

IRS notices and audit history. Has the client received any notices from the IRS or state taxing authority? Are they currently under audit? Do they have an open installment agreement? Are they in Currently Not Collectible status? Is there an active levy or lien? Each of these changes the engagement dramatically. A routine tax prep engagement becomes a resolution case if the client has a $47,000 balance due and a wage garnishment they forgot to mention.

Foreign accounts and assets. FBAR and FATCA reporting obligations apply to U.S. persons with foreign financial accounts exceeding $10,000 in aggregate value at any point during the year. The penalties for non-filing are severe — up to $12,909 per violation for non-willful failures, and the greater of $100,000 or 50% of account balance for willful violations. Many clients do not realize that a bank account they opened when they lived abroad, or that their spouse maintains in another country, triggers a reporting obligation. The intake form must ask the question. If the form does not ask, the client will not tell you, and you will prepare a return that is incomplete without knowing it.

The document checklist: managing the paper chase

Tax preparation is, at its core, a document-processing operation. The intake form should include or generate a document checklist that tells the client exactly what to provide: W-2s, 1099s of all types, K-1s, brokerage statements, mortgage interest statements (1098), property tax bills, charitable donation receipts, health insurance forms (1095-A/B/C), student loan interest statements (1098-E), tuition statements (1098-T), childcare provider information (name, address, EIN), and prior year returns if the client is new. The checklist should include a deadline for document delivery and a clear statement of what happens if documents arrive late — specifically, whether a late delivery means an extension filing, a surcharge, or both.

The document checklist is also where identity verification happens. The IRS requires tax preparers to obtain a PTIN (Preparer Tax Identification Number), and e-filing requires an EFIN (Electronic Filing Identification Number). For the client side, the preparer needs to verify the client’s identity — IRS guidelines recommend reviewing a government-issued photo ID and verifying the Social Security number against the Social Security card or an official document. This is not optional paperwork. Identity theft and fraudulent return filing are among the IRS’s top enforcement priorities, and a preparer who files a return for a client they never verified is exposed if that return turns out to be fraudulent.

Circular 230: the compliance framework behind every intake question

Treasury Department Circular 230 governs practice before the IRS and imposes specific due diligence requirements on tax practitioners. It is not a suggestion. Violations can result in censure, suspension, or disbarment from practice before the IRS — which, for a tax preparer, is effectively a career-ending sanction.

Circular 230 requires that a practitioner exercise due diligence in preparing returns and other documents, that the practitioner not sign a return unless they have a reasonable belief that the tax treatment of each position is correct, and that the practitioner identify and address potential conflicts of interest. The intake form is the practitioner’s first line of Circular 230 compliance. It documents what information was collected, what questions were asked, and what the client represented. If the IRS later challenges a position on the return, the intake form is evidence that the preparer exercised due diligence — or evidence that they did not.

Conflict screening also happens at intake. A preparer who represents both spouses in a divorce, or both parties to a business dispute, has a conflict. A preparer who represents a business and its owner when their interests diverge (reasonable compensation in an S-Corp, for example) has a conflict. The intake form is where these relationships are identified and the conflict analysis is triggered. For more on how regulated industries build compliance into intake, our overview covers the pattern across professions.

Multi-state filing: the question that changes the engagement

A client who lived in New Jersey, worked remotely for a company headquartered in New York, earned rental income from a property in Florida (no state income tax, but there may be tangible personal property tax on furnishings), and sold stock through a brokerage domiciled in California has a multi-state filing situation that quadruples the complexity of the return. The intake form must capture every state where the client lived, worked, or earned income during the tax year. It must also ask about state-specific credits, reciprocity agreements, and whether the client has already filed in any state for the current year.

For businesses, multi-state complexity is even greater. Sales tax nexus, income tax nexus, payroll tax obligations, and franchise tax requirements each have different thresholds and different filing deadlines. A business that started selling online in three new states may have created nexus obligations it does not know about. The intake form is where the preparer identifies the state exposure and determines whether the engagement now includes state compliance work that was not part of the original scope. This is a common trigger for the scope conversations that recurring service agreements are designed to handle.

The referral and upsell data: turning seasonal into year-round

Most accounting firms make the majority of their revenue in four months and spend the other eight trying to smooth the curve. The intake form is an underutilized tool for identifying year-round service opportunities. A client who mentions disorganized books needs bookkeeping. A client who mentions a new business needs entity formation advice. A client who mentions retirement planning needs a financial planning referral. A client who mentions employees needs payroll services.

The intake form should include a section — even a simple checklist — that asks whether the client is interested in bookkeeping, payroll, financial planning, entity structuring, or other advisory services. Not a hard sell. A question. The client checks a box or does not. But the data is captured, and the firm has a pipeline for year-round engagement instead of a seasonal crunch followed by eight months of quiet. Our guide on intake forms and client retention covers how this single section converts one-time clients into recurring relationships.

Seasonal workflow: January rush vs. extension-season pace

The intake form itself needs to account for the rhythm of tax season. In January and February, clients are still gathering documents. The intake form should flag which documents have been received and which are outstanding, with automatic follow-up triggers when deadlines approach. By mid-March, the form should indicate whether the return can be filed by April 15 or whether an extension is needed — and the extension decision should be documented on the intake record, not in a text message thread.

Extension season — April 16 through October 15 — has a different pace but the same documentation requirements. Clients who file extensions often have more complex situations (waiting for K-1s, resolving prior-year issues, completing estimated tax calculations). The intake form for an extension client should capture why the extension was filed, what is still outstanding, and what the expected timeline for completion is. A preparer who files 200 extensions in April and does not track them systematically will lose clients in the pile. The intake form is the tracking mechanism.

For practitioners who handle financial advisor intake alongside tax prep, the compliance parallels between KYC requirements and tax intake due diligence are worth reviewing — both professions are building the same kind of client profile, just for different regulators.

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Related reading:

• Intake Forms for Recurring Service Agreements
• Intake Forms for Regulated Industries
• Client Intake for Financial Advisors: Compliance Edition
• How Intake Forms Set Client Expectations
• Intake Forms and Client Retention