The PBC checklist guide: How small CPA firms kill the document chase

Why traditional document intake breaks down

Most tax practices rely on two methods to collect client records. Both create friction for the client and extra work for the firm.

1. The 35-page tax organizer. Tax software packages generate dense questionnaire packets every January. Clients glance at pages of irrelevant questions about foreign bank accounts and oil depletion allowances, experience decision fatigue, and abandon the document until April.
2. The open-ended email thread. A staff accountant emails a bulleted list of missing documents. The client replies with two attachments on Monday, one image on Thursday, and skips the rest. Within three weeks, that single tax return is scattered across twelve message replies with altered subject lines.

A modern Provided By Client or PBC workflow replaces both methods with a structured, itemized checklist tied directly to the tax project. When clients see specific items with real institution names, they upload documents weeks earlier.

Three rules for structuring high-converting PBC checklists

Building a request list that clients actually complete requires clear structure. The goal is to remove every ounce of guesswork before the client opens their drawer or financial portal.

1. Dedicate one checklist slot per specific document

Never group multiple forms into a single request line. When a checklist contains an item labeled "W-2s and 1099s", the client uploads one W-2 from their primary job and marks the item complete. Your team must then reopen the request, contact the client, and explain that their spouse's W-2 and investment 1099-DIV are still missing.

Create an individual item for each expected account:

• Form W-2 from Apex Technology
• Form W-2 from St. Jude Medical Center
• Form 1099-INT from Chase Bank
• Consolidated Form 1099-B from Charles Schwab all pages

This gives the client an immediate sense of progress as they check off each item. It also allows your staff to see which accounts have arrived without opening files.

2. Use plain English and sample issuer names

Taxpayers do not memorize IRS form numbers. Asking a client for "Schedule K-1 Form 1065" often results in blank stares or delayed responses.

Translate the request into plain language. Write: "K-1 from your partnership or LLC investment, usually issued by the managing partner in late February or March." For brokerage statements, write: "Consolidated 1099 tax statement from your investment account, such as Schwab, Fidelity, or Vanguard. Please upload the complete document, including all summary and transaction detail pages."

3. Separate client upload slots from internal workpapers

Clients should see only their active request items and their own uploaded files. In CPA Relay, document requests create amber shared folders where clients upload PDFs and phone photos.

Once staff verify a document, they move it into a sky-blue firm folder. Sky-blue folders remain private to the accounting team. This keeps internal workpapers, tick marks, and prior-year comparison sheets separate from the client-facing portal view.

Individual Form 1040 and Married Filing Jointly PBC checklist

Below is a copy-pasteable PBC checklist template for standard individual and married filing jointly tax returns. Use prior-year workpapers to populate specific account names before sending this list to the client.

• Government photo identification. Copy of a valid driver's license or state identification card for taxpayer and spouse. Must display full legal name, document number, issuing state, issue date, and expiration date.
• Identity protection PIN notice. Copy of IRS notice CP01A showing the current six-digit Identity Protection PIN for any household member assigned a PIN by the IRS.
• Wage and salary statements. Form W-2 from each employer for taxpayer and spouse.
• Interest income statements. Form 1099-INT from each bank, credit union, or private lending arrangement showing interest earned during the year.
• Dividend and investment statements. Form 1099-DIV and consolidated 1099-B statements from each brokerage firm, including Charles Schwab, Fidelity, Vanguard, or Morgan Stanley. Must include all pages showing cost basis reporting and short-term or long-term transaction summaries.
• Retirement distributions. Form 1099-R for distributions from pensions, annuities, traditional IRAs, Roth IRAs, or 401k plans. Also provide Form 1099-SSA for Social Security benefits received.
• Retirement and savings contributions. Year-end contribution confirmation statements or Form 5498 for traditional IRA, Roth IRA, SEP-IRA, or Health Savings Account contributions made for the tax year.
• Pass-through entity tax forms. Schedule K-1 received from partnerships filing Form 1065, S-corporations filing Form 1120-S, or trusts and estates filing Form 1041.
• Mortgage interest and real estate taxes. Form 1098 from each mortgage lender showing mortgage interest and points paid, along with real estate property tax receipts from the county or municipal tax collector.
• Marketplace health insurance statement. Form 1095-A for any family member enrolled in health insurance through a state exchange or the federal HealthCare.gov marketplace.
• Estimated tax payments. Exact dates and dollar amounts for all federal and state quarterly estimated tax payments submitted, accompanied by canceled checks or EFTPS payment confirmation receipts.
• Dependent care provider details. Daycare or preschool provider legal name, physical address, Employer Identification Number or Social Security number, and total dollar amount paid per dependent.
• Real estate settlement sheets. Final ALTA or HUD-1 closing disclosure statement for any residential or commercial property purchased, sold, or refinanced during the tax year.

Schedule C and single-member LLC add-on checklist

When an individual client operates a sole proprietorship, freelance business, or single-member LLC, attach this Schedule C module to their primary 1040 request list.

• Annual profit and loss statement. Year-end income statement or summary of gross receipts and business expenses exported from accounting software such as QuickBooks or Xero.
• Payment processing and non-employee forms. Copies of all Forms 1099-NEC and Forms 1099-K issued to the business by merchant processors like Stripe, Square, PayPal, or corporate clients.
• Year-end bank and credit card statements. December 31 statements for all dedicated business checking, savings, and credit card accounts to verify year-end balances.
• Business vehicle mileage log. Written or digital mileage log detailing total miles driven during the calendar year, total business miles, vehicle description, and date placed in service.
• Home office deduction documentation. Dedicated square footage used exclusively and regularly for business, total finished square footage of the home, and annual totals for rent, utilities, internet, and home insurance.
• Self-employed health insurance premiums. Total premiums paid during the year for medical, dental, and qualified long-term care insurance covering the business owner, spouse, and dependents.
• Equipment and capital purchase receipts. Vendor invoices and proof of payment for computer hardware, machinery, tools, or office furniture purchases exceeding $2,500 to support the de minimis safe harbor election.

Form 1120-S and Form 1065 business entity PBC checklist

Corporate and partnership tax returns require balance sheet reconciliation and ownership documentation. Send this request checklist to business owners in early January.

• Trial balance and general ledger exports. Full-year Trial Balance and detailed General Ledger export from the company accounting software through December 31 on an accrual or cash basis.
• December 31 bank and debt statements. December 31 statements for all operating bank accounts, credit card accounts, commercial lines of credit, equipment loans, and mortgages matching balance sheet liabilities.
• Annual payroll reconciliation reports. Form W-3 transmittal, Form 940 federal unemployment tax return, all four quarters of Form 941, and state unemployment quarterly contribution filings.
• Shareholder health insurance verification. Documentation of health insurance premiums paid on behalf of greater than two percent S-corporation shareholders, verifying inclusion in Box 1 of Form W-2.
• Owner equity and distribution schedules. Detailed breakdown of capital contributions, cash draws, property distributions, and ownership percentage changes for all shareholders or partners during the year.
• Fixed asset additions and dispositions. Paid vendor invoices, purchase contracts, and financing agreements for all equipment, software, or leasehold improvements acquired, plus sales agreements for retired assets.
• Officer and partner loan documentation. Formal promissory notes, loan agreements, and interest repayment schedules for any loans between the entity and shareholders, partners, or related parties.

How to manage PBC workflows in CPA Relay

Creating a checklist is only half the battle. Your team also needs a reliable way to monitor what has arrived without maintaining manually updated spreadsheets.

CPA Relay connects document intake directly into your engagement workflow:

• Roll forward prior-year intelligence. When setting up a returning client's tax project, roll forward their document checklist from the previous year. Known bank names, brokerage accounts, and employers populate automatically into fresh request items.
• Itemized client portal to-dos. Each requested document appears as an actionable to-do in the client's authenticated portal. The client drags and drops files from their desktop or uploads photos from their mobile phone.
• Amber shared folder routing. Uploads land directly in the project's amber shared folder, stamped with the client's name and upload time. Staff receive instant notification that an item is ready for review.
• What's Outstanding triage queue. Firm managers view every open document request, missing K-1, and unsigned signature authorization across the entire practice on a single triage screen.

To learn how to design firm intake gates and manage return capacity, read our companion small CPA firm guide to client tax document intake and tracking and our guide to CPA engagement letters and Section 7216 consents.

Frequently asked questions about PBC checklists

What is the difference between a PBC checklist and a tax organizer?
A traditional tax organizer is a 35-page questionnaire filled with generic questions that rarely apply to the taxpayer. A Provided By Client checklist is an itemized request list that specifies the exact forms, account statements, and tax records needed for that specific engagement.

Why should CPA firms stop collecting tax documents over email threads?
Email threads scatter documents across dozens of replies, obscure which items remain missing, and create security risks for sensitive taxpayer information. A client portal stores files directly inside the engagement record and updates checklist items as files arrive.

How should a firm handle incomplete brokerage 1099 statements?
Brokerage statements from institutions like Charles Schwab or Fidelity often run dozens of pages. Clients frequently upload only the two-page summary. State in the checklist item that all pages including realized gains and loss schedules are required, and reject partial uploads promptly.

When should a small CPA firm send PBC checklists to clients?
Distribute PBC checklists in mid-January as soon as engagement letters are signed. This gives clients time to review their list before tax forms arrive in the mail, allowing them to upload items in stages throughout February.