How to Prepare a Financial Affidavit from Bank Statements in a Divorce Case

The financial affidavit is one of the most scrutinized documents in a contested divorce. It’s the formal snapshot of your client’s financial life — income, monthly expenses, assets, liabilities — and it’s what judges and opposing counsel use to evaluate everything from child support to property division.

Most of the numbers on that affidavit come from source documents you’ve collected in discovery: bank statements, pay stubs, investment account statements. Preparing it accurately means knowing how to pull those figures correctly — and knowing the difference between a defensible affidavit and one that invites a challenge.

For a broader overview of where the affidavit fits in the discovery process, see The Paralegal’s Complete Guide to Financial Discovery in Divorce Cases.

What the Financial Affidavit Covers

The structure varies by state, but most financial affidavits require disclosure across four categories:

Income
All sources — wages, self-employment income, rental income, dividends, benefits, support received from prior relationships. Monthly figures are the standard, so if your client is paid bi-weekly or hourly, you’ll need to calculate the monthly equivalent.

Monthly expenses
Housing, utilities, food, transportation, childcare, healthcare, insurance, personal expenses. These are often estimated, but estimates should be grounded in actual spending data from bank and credit card statements.

Assets
Real property, vehicles, bank and investment accounts, retirement accounts, business interests. Each asset typically requires a current value — not the purchase price, but what it’s worth now.

Liabilities
Mortgages, car loans, credit card balances, student loans, personal debts. Again, current balances, not original amounts.

State-by-State Variation

Affidavit format is not uniform. Before you build anything, confirm what your jurisdiction requires.

Florida uses two forms: a short form for parties with monthly income under $50,000 and a long form for those above that threshold. The required level of detail differs substantially between them.

Washington calls it a Financial Declaration rather than a financial affidavit, and the form structure reflects that state’s community property framework.

California uses the Income and Expense Declaration (FL-150) alongside the Schedule of Assets and Debts (FL-142) — two separate documents that together cover what other states include in a single affidavit.

Other states have their own formats, their own required schedules, and their own rules about what gets attached as supporting documentation. If you’re working in a jurisdiction you’re less familiar with, find the current court-approved form before you start.

How Paralegals Currently Pull Figures from Bank Statements

In practice, preparing the affidavit from bank statements is a manual process. It looks something like this:

1. Pull the most recent months of bank statements (typically 3–6 months for income and expense calculations)
2. Review transactions to categorize monthly spending — housing, food, utilities, childcare, etc.
3. Identify regular income deposits and calculate a monthly average or use the most recent documented amount
4. Cross-reference pay stubs to confirm the wage income figure
5. Note any irregular deposits, transfers, or large withdrawals that need explanation
6. Pull account balances as of the relevant date (date of separation or filing date, depending on jurisdiction)
7. Enter the figures into the affidavit form

For a self-employed client, this process is more involved. Business bank statements need to be separated from personal ones, income may be irregular, and you may need to work from profit and loss statements rather than just deposit history.

Why You Need Complete Statements Before You Start

This is not the place to work with partial records. Before you begin preparing the affidavit, confirm that you have complete statement histories for every account that will appear on it.

Gaps in the record lead directly to errors in the affidavit:

• A missing month of income deposits can cause you to understate or overstate average monthly income
• A statement period that’s out of date may not reflect a salary change, bonus, or new income source
• Missing credit card statements mean missing expense data — or missing evidence of spending patterns that could be relevant to asset dissipation claims

The deficiency tracking process described in how to track missing bank statements in divorce discovery should be completed before you start pulling figures for the affidavit. Build the affidavit from a complete, verified record — not from whatever happened to arrive first.

Starting from a well-organized document set also makes the process faster and less error-prone. If your financial discovery documents are organized by account and statement period before you begin, you’re not hunting for the right version of a statement mid-process.

Common Errors in Affidavit Preparation

Using averages when actuals are available. If your client receives a consistent monthly salary, use the actual figure — don’t average across months and introduce unnecessary variation. Averaging makes sense for irregular income, not for stable wages.

Missing accounts. If a credit union account didn’t make it into the document log, it may not make it onto the affidavit. Every account on the financial disclosure list needs to appear somewhere in the assets section. Cross-check the affidavit against your complete account inventory before finalizing.

Using the wrong valuation date. Jurisdictions differ on whether assets are valued as of the date of separation, the date of filing, or another date. Using the wrong date — or leaving the field blank — can create problems at trial.

Expense estimates not grounded in records. A client who guesses their monthly grocery expense is going to have a harder time defending that figure than a client whose number came from 12 months of bank statement data. Where the records support a specific figure, use it.

Pay stub math errors. Converting from bi-weekly to monthly requires multiplying by 26 and dividing by 12 — not multiplying by 2. This is a common mistake that produces a slightly understated monthly income figure.

Best Practices

• Work from a checklist. Every section of the affidavit maps to specific source documents. Build the checklist before you start filling out the form.
• Cite your sources. For each major figure on the affidavit, note in your working file where the number came from — which statement, which pay stub, which tax return line.
• Have the attorney review income figures specifically. The income section is most often challenged, most often subject to credibility attack, and most often the basis for support calculations.
• Flag anything unusual. Large deposits that aren’t wages, transfers in from other accounts, irregular expense patterns — these are facts the attorney needs to know about before the affidavit is signed.
• Don’t rush the signature. The client signs the affidavit under oath. They should understand what they’re certifying before they sign it.

Infera and Financial Affidavit Preparation

Infera builds the financial affidavit from extracted, verified data — pulling figures from the bank statements and pay stubs already in the system rather than requiring manual entry from scratch. If you’re spending significant time on this process across multiple matters, it’s worth seeing how that changes when the source documents have already been processed.

Book a demo at inferalaw.com.