Iowa Support Master
by Alft & Wilson Publishing
It figures!
Guidelines515-822-0203 Tech Support515-776-4088
Online Calculator  ·  Pro Portal
Run a full Iowa child support calculation right now›

Every desktop feature, in your browser. Works on Apple (including iPad), Windows and Chrome devices. Nothing to download, nothing to install — and your case data never leaves your computer.

Try it free now Full-featured — all desktop features included 🔒 Private & secure see how ›
Open the Pro Portal

Free through January 1. No sign-up, no credit card. No installation.

2027 Support Master — sales begin soon

The customer service with Mike and Pat is unmatched. I know of few companies where you can get someone on the phone to discuss not only software issues, but also application of the law. The unique combination of technical know-how and legal experience really lends itself to higher level support, and it cannot be beat for the cost.
— Rebecca Feiereisen, Esq.

Have a case you need help with? Save the file and send it to Pat at pat@patwilson.com. He will open it on his end and offer his advice.

Get the Software
🛒 Order Support Master Purchase the 2027 program › ✉️ Mail a Check Printable 2027 order form ›
Reference & Guidelines
📄 2026 Guidelines Full Iowa guidelines PDF › 📋 Iowa Divorce Info Free reference guide ›
Learn More
✨ Special Features What ISM can do › 🏆 Why Use ISM? Compare & see the difference › 💬 Support & FAQs Help & common questions ›

About Iowa Support Master

Iowa Support Master is a child support guidelines calculation software program. We were the very first software program released in Iowa in April 1994. Since then, our user base has expanded across Iowa and into neighboring states.

Our support is second to none. Calls are answered live 24/7 both for tech support and guidelines assistance.

Want to try the software? Free. Contact us.

Pat & Mike — I am so glad the two of you invented Iowa Support Master! It made all our lives, family law attorneys, better. No more doing everything by hand. I know you will continue to keep up with the periodic updates due to the review committee and also continue to improve the program itself.
— Mona Knoll, Esq.

There’s a reason why Iowa judges, lawyers and law office staff rely on Iowa Support Master. Find out why today!

🔒 Privacy Assured

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Short version: your client’s information never leaves your computer.

Iowa Support Master runs entirely inside your web browser. The incomes, the parties, the children, and every financial detail you type are processed right there on your own machine.

Nothing is uploaded to us. Every calculation, every Guidelines worksheet and the Financial Affidavit are assembled inside your browser — not on our server. Your case data is never sent to us, and it is never stored or logged on our server.

A built-in safeguard enforces this. Before any other code runs, the program installs a privacy “egress guard” that stops the browser from sending information anywhere, with only two harmless exceptions: a quick licence check, and a “is a newer version available?” check. Neither one carries any case data, and every other attempt to send data is automatically refused.

This is not a policy. It is a lock. A promise in a privacy statement depends on us keeping it. This is a default-deny rule compiled into the program: anything that is not the licence check or the version check is refused before it can leave, whether it came from us, from a browser extension, or from anything injected into the page.

For your IT department. You don’t have to take our word for it. Open the browser’s Developer Tools, switch to the Network tab, and run a full calculation. The only requests are wismauth.cgi (licence) and ism-version.json (version), and neither contains client data. The egress guard refuses everything else and records each refusal in the console, so a denied attempt is visible rather than silent.

On the Windows desktop program it is tighter still. The desktop build makes no network calls from the page at all — the licence check runs through the program itself, and your case files are read and written directly on your own disk. There is no cloud account, no sync folder and no telemetry. The installer is signed under an Extended Validation certificate issued to Alft & Wilson Publishing, so Windows shows our company name before you install and will tell you if a single byte has been altered.

And when a file does travel. Emailing a case to co-counsel, or carrying it on a thumb drive, is your decision rather than ours — so any case file can be given its own password before it leaves, and it stays protected at the other end.

Close Questions about any of this? Call Mike Alft — 515-776-4088