Skip to main content
Casefile

Illinois divorce & child support

Your Illinois financial affidavit, from dread to done in one weekend.

One-time $147

vs. $1,500 – $6,000

typically billed by an attorney’s office to assemble the same affidavit.

An Illinois 13.3.1 financial affidavit is 459 fields. Most parents spend 15 to 30 hours typing those numbers in, then more hours cross-checking against bank statements. Casefile reads your documents and fills the form for you, so you can finish in one or two sittings.

Upload your statements. We read them. We fill the 459-field form. We cross-check every number against a document. You walk into your attorney’s office with a court-ready PDF and a clean ZIP.

Finish my affidavit — $147 one-timeSee it work — 30-second demo

Not ready to pay? Try the free Readiness Score →

Founder’s guarantee: If Casefile doesn’t save you the cost of one hour of your attorney’s time, email me. I refund you personally — the full $147.

— Kevin Champlin, founder

$147 one-time. 30-day money-back guarantee. No subscription required.

Hands sorting through a file organizer of personal documents
Your files are locked before they are stored
Even we cannot read your uploads
Built for Illinois 13.3.1
Not a law firm — by design

The math

Three ways to file a 13.3.1. One of them is $147.

The form is the same. The cost to get through it is not. Here is what your three options actually run.

Option 1

Pay your attorney to type

$1,500–$6,000

per case

$300–$400 per hour, 5 to 15 hours of intake billing while your lawyer or their paralegal types your bank statements into the form. Complex cases (self-employed, multiple income sources) run higher.

Option 2

Hire a paralegal service

$300–$1,500

flat fee

Cheaper than the attorney route, but you still gather everything, type the numbers, and chase the paralegal for revisions. Nobody cross-checks your math against your statements.

Option 3

Use Casefile

$147 one-time

no subscription

We read the statements, fill the form, and cross-check every number. You get a court-ready PDF and an attorney hand-off ZIP. No typing. One payment, for one case.

Casefile is one-time $147. That is less than the cost of one hour of your attorney typing your bank statements into the form.

Finish my affidavit — $147 one-timeSee it work — 30-second demo

The magic

Every number on your affidavit, matched to a document.

The audit pass a judge would do, except it happens before you walk into court. Three moves: you state a number, we read your documents, we tell you whether they agree.

  1. 1

    You say a number

    In the setup wizard you tell us the simple stuff: rent $1,800/month, take-home $7,500, child support $500. No spreadsheets, no math — see what every line of the 13.3.1 actually wants.

  2. 2

    We read your docs

    Drop in your lease, your pay stub, your bank statement. Casefile extracts the actual rent, the actual net pay, the actual recurring support transfer. (Filling it out yourself? Here's the DIY playbook.)

  3. 3

    We tell you the truth

    Match within tolerance, green check. Differs from the document, amber pill, with the source number called out. Missing the doc, Verify prompt and a one-tap upload. Every affidavit line, provable — and every hour you save is an hour your attorney can't bill.

Reconciliation · live preview

Every number, checked against its document.

10 match2 differ3 to verify

Income

  • Gross monthly wages

    You stated $6,250 · W-2 + March pay stub

    Match

  • Overtime & bonus (3-mo avg)

    You stated $480 · Pay stubs

    Differs · docs show $612

  • Side income (1099)

    You stated $300 · 1099-NEC

    Verify · upload to confirm

Monthly expenses

  • Rent

    You stated $1,850 · Lease + bank debits

    Match

  • Child support paid

    You stated $1,100 · Bank transfers

    Match

  • Daycare

    You stated $940 · Bank debits

    Match

  • Groceries (3-mo avg)

    You stated $720 · Card statements

    Differs · docs avg $810

  • Auto loan

    You stated $410 · Loan statement

    Match

  • Utilities

    You stated $295 · ComEd · Nicor · water

    Match

  • Health insurance

    You stated $260 · Pay-stub deduction

    Match

Assets

  • Checking balance

    You stated $3,420 · Bank statement (closing)

    Match

  • 401(k)

    You stated $48,900 · Fidelity statement

    Verify · statement 2 mo old

  • Vehicle — 2019 RAV4

    You stated $19,500 · KBB estimate

    Verify · add valuation

Debts

  • Credit card

    You stated $6,240 · Card statement

    Match

  • Student loan

    You stated $14,800 · Loan statement

    Match

Casefile checked all 15 in seconds — and caught 2 that don’t match what you typed.

Illustrative example · your real numbers stay encrypted

Income agrees within 5%, expenses within 10%, support and maintenance to the dollar. Real-life tolerances, not gotcha matching. The result is an affidavit where every line ties back to a document.

Walk in with numbers a judge can’t poke holes in.

Every figure provable, every difference caught before you file — one weekend instead of fifteen hours, for less than an hour of a lawyer’s time.

Finish my affidavit — $147 one-timeWatch the 30-second demo

30-day money-back guarantee

Security

Safer than safe.

Casefile was built with one assumption: if we ever get hacked, your files have to stay unreadable. Here’s how, in plain English.

Even we can’t read your files

Every file you upload is locked with its own unique key. Those keys live in a separate vault, not on the same server as your files. Our own team can never browse your uploads — the admin panel shows filenames and dates only, never contents.

If our database got stolen tomorrow

It would be gibberish. We’ve designed Casefile so the database alone is useless without the keys. We verify this every release: a full database export, opened, shows zero readable bank statements, zero readable transactions, zero readable anything about you.

Your data is yours. Always.

We never sell your data. We never train AI on your documents. We never use what you upload for anything except helping you prepare your case. Download everything as a ZIP whenever you want. Delete your account in one click.

Want the technical version? Read the full security breakdown →

Quiet ceramic tea moment

I went through a divorce. By the twelfth financial affidavit I’d burned a ream of paper and most of my Saturdays. The 13.3.1 form isn’t complicated, it’s just exhausting. Pages of expense categories, six months of bank statements to sort, receipts that didn’t quite fit anywhere.

So I built Casefile for myself first. Upload everything once. The tool reads your statements, sorts your transactions, fills in the official Illinois 13.3.1, and packages the supporting documents. You hand the result to your attorney.

Then I figured other people are doing the same thing on the same kitchen table. So here it is.

— Kevin Champlin, founder

Learn more

Before you start, you should know…

Three honest reads on what an Illinois divorce actually costs, what the 13.3.1 actually asks for, and what your attorney’s paperwork bill is really paying for.

Cost guide

How much does an Illinois divorce cost in 2026?

Real numbers on filing fees, attorney intake, paperwork prep, and the hidden costs no one warns you about.

Read the cost breakdown →

Form walkthrough

The 13.3.1, line by line

What every section of the Illinois financial affidavit actually wants — with documents and examples.

Walk the form →

Attorney fees

What attorneys charge for paperwork

Honest 2026 hourly rates and per-document fees from Illinois family-law firms — and the work you don’t have to pay for.

See the fee math →

Honest fit

Who Casefile is for. And who it isn’t.

Casefile is a focused tool. Two minutes of self-check beats a refund request later.

For you if…

  • You’re filing an Illinois 13.3.1 in a divorce or child-support case.
  • You want to spend less on attorney intake billing.
  • You want every number on your form provable from a document.
  • You’d rather spend the weekend with your kids than with spreadsheets.

Not for you yet if…

  • ·You’re filing outside Illinois. Drop your state below and we’ll let you know when we expand.
  • ·You’re already past your final hearing. Casefile is built for the intake stage.
  • ·You need actual legal advice. We’re a document tool, not a law firm. Talk to a licensed attorney for that.

Pay once. File. Done.

One-time payment. No subscription. The first 100 founding members get $50 off. Optional support tier if your case stays open.

Case Completion Pack

Everything you need to finish one Illinois 13.3.1 and walk into your attorney’s office with a clean folder.

$147 one-time

  • Locked document vault (5 GB)
  • Bank-statement reading & categorization
  • Illinois 13.3.1 affidavit, court-ready PDF
  • Reconciliation against every number you state
  • Attorney hand-off ZIP & share link
  • Two-factor authentication, audit log
  • 30 days of vault retention after filing
Finish my affidavit — $147

30-day money-back guarantee. No subscription required.

Founding member — first 100

FOUNDING100

$50 off the Case Completion Pack — honored once the first 100 customers sign up.

$97 one-time

Same product, $50 off, locked at signup. Use code FOUNDING100 at checkout. After the first 100 are claimed, price returns to $147.

Optional — add after checkout

Active Case Support — $29/month

Cases stretch. Finances change. If you want continuing support for the duration of your case, you can add Active Case Support after checkout for $29/month: refile your affidavit on demand when your numbers change, hearing-date reminders, attorney share-links, and extended vault retention. Cancel anytime — the moment your case is final, you can stop.

Frequently asked questions

Is Casefile a law firm?
No. Casefile is not a law firm and does not provide legal advice. Use it to organize documents and prepare for meetings with a licensed attorney.
How secure are my documents?
Every file you upload is locked with its own unique key before it is stored. Those keys live in a separate vault, not on the same server as your files. If our database ever leaked, your data would be unreadable. Even our team cannot browse what you upload — the admin panel shows filenames and dates, never contents. Two-factor authentication is required on every account. We never sell your data, and we never train AI on your documents.
What does Casefile not do?
We don't file in court. We don't recommend legal strategy. We don't draft pleadings. Those are jobs for your attorney.
Can my attorney see my files?
You can export everything as a ZIP and hand it to your attorney any time. Access is never shared automatically.
Is there a money-back guarantee?
Yes. 30-day money-back guarantee, no questions asked. If Casefile does not save you the cost of one hour of your attorney’s time, email me and I refund you personally.
Is this a subscription?
No. Casefile is a one-time $147 payment for your case. After you file, you can optionally add Active Case Support ($29/month, cancel anytime) for hearing-date reminders, refile-on-demand if your finances change, and attorney share-links — but only if you want it. Nothing recurring is required.

Outside Illinois?

Tell us where you’re filing.

Casefile is built for the Illinois 13.3.1 today. Drop your state and we’ll let you know the moment your jurisdiction’s form is supported.

Your weekend, back.

$147, one time. We read your statements. We fill the form. You hand your attorney a clean folder and go live your life.

Finish my affidavit — $147 one-timeSee it work — 30-second demo

$147 one-time. 30-day money-back guarantee. No subscription required.