To find out how much you owe the Iowa Department of Revenue, log into GovConnectIowa at govconnect.iowa.gov, where your total liability updates in real time. You can also call the Payments, Billings, and Collections line at 866-339-7912, or send a written request by mail. Because unpaid Iowa taxes accrue interest daily at 10% per year for 2026, the figure printed on an older notice is already out of date by the time you read it.1Iowa Department of Revenue. Penalties and Interest Rates
What to Have Ready Before You Check
Pull a few numbers together before you sign in or dial. Individual taxpayers need a Social Security Number. Business owners need a Federal Employer Identification Number. Both should also have their Iowa Department of Revenue ID, the state-assigned number that ties your account to GovConnectIowa.
Keep any recent letters from the department within reach. Each notice carries a Notice ID or Assessment Number, and giving that number to a representative pulls up the exact liability faster than searching by name or tax period.
Checking Your Balance on GovConnectIowa
GovConnectIowa is the department’s central portal for filing, paying, and viewing account activity. Start by creating a username and password at govconnect.iowa.gov.2Iowa Department of Revenue. GovConnectIowa Help
New users don’t see their full account right away. After you register, request an Access Code letter, which the department mails to the address on file. The code expires 90 days after the date on the letter and can only be used by the person who requested it.3Iowa Department of Revenue. GovConnectIowa Help – Section: Accessing Accounts on GovConnectIowa
Once the code is verified and your account is linked, open the Accounts section of your dashboard. You’ll see every associated tax type and the total outstanding balance with penalties and accrued interest folded in. This is the most current figure available anywhere, because it reflects the daily interest calculation.
Paying While You Wait for the Access Code
The letter takes several business days to arrive. GovConnectIowa’s Quick Pay option lets you submit a payment before your account is fully linked.4Iowa Department of Revenue. GovConnectIowa Frequently Asked Questions Quick Pay won’t show your full balance breakdown, but it stops interest from growing on whatever you can pay now.
Checking Your Balance by Phone or Mail
If you’d rather talk to someone, the department has dedicated lines:
- General questions: 515-281-3114, or toll-free at 800-367-3388
- Payments, billings, and collections: 866-339-7912
Have your SSN or FEIN, Iowa Department of Revenue ID, and any Notice IDs in front of you. Phone lines are staffed Monday through Friday, 8:00 a.m. to 4:30 p.m. Central Time.5Iowa Department of Revenue. Iowa Department of Revenue Locations
You can also request a balance in writing. Send a letter with your full legal name, current mailing address, SSN or FEIN, and a clear request for the current balance on the tax types and periods you want. Address it to:
Iowa Department of Revenue
Hoover State Office Building
1305 E. Walnut St.
Des Moines, IA 503196Iowa Department of Revenue. Mailing Addresses
Mail is the slowest route, and the balance keeps growing while your letter is in transit. Online or phone will get you an actionable number much faster.
If Someone Else Is Checking for You
To let a CPA, attorney, or enrolled agent pull your account, file Form IA 2848 (Iowa Department of Revenue Power of Attorney) within six months of signing it. Stamped or typed signatures are not accepted. If you want the representative to view information only, use Form IA 8821 instead.7Iowa Department of Revenue. IA 2848 Iowa Department of Revenue Power of Attorney Form
Why the Number Is Higher Than You Expected
The balance on your account isn’t a single figure. It’s the original tax owed plus penalties plus interest, and each piece works a little differently.
Penalties
Iowa charges a 5% penalty on unpaid tax when you fail to file a return by the due date, and a separate 5% penalty when you fail to pay by the due date. They stack. Miss both, and you’re looking at 10% in penalties before interest starts running.8Justia Law. Iowa Code 421.27 – Penalties
Heavier penalties apply in narrower situations: 10% if you filed an extension but didn’t pay at least 90% of the tax by the original deadline, an added $1,000 if you ignore a written demand to file for 90 days, and 75% for willful evasion. All of these come from Iowa Code section 421.27.8Justia Law. Iowa Code 421.27 – Penalties
Interest
Interest accrues daily on unpaid tax and on unpaid penalties. The 2026 rate is 10% annually, roughly 0.8% per month or about 0.027% per day.1Iowa Department of Revenue. Penalties and Interest Rates That daily accrual is why a $5,000 liability from last year looks bigger today, and why the number you saw a month ago isn’t the number you should send a check for now.
What to Do Once You Know the Number
If you can pay the full balance, do it through GovConnectIowa the same day you confirm the figure. If you can’t, Iowa offers two formal ways to resolve what you owe.
Payment Plans
Set up a plan through GovConnectIowa or by calling 515-281-3114. Plans run up to 36 months with a $10 minimum monthly payment.9Iowa Department of Revenue. Collections Interest continues on the unpaid balance during the plan, so paying more than the minimum shortens the plan and lowers the total cost.
You pick the day of the month your payment is due. If you need to cancel or delay a payment, do it at least five days before that date. A new tax liability you can’t pay puts the plan in default. The department will also apply any state or federal refunds you’re owed to your balance during the plan, and those intercepts reduce the debt but don’t substitute for your monthly payment.
Offer in Compromise
If your finances genuinely prevent full payment, you can propose a settlement for less than you owe through Iowa’s Offer in Compromise program. The department considers offers where there’s doubt the tax is owed, doubt it can be collected, or both.10Iowa Department of Revenue. Offer in Compromise Packet
To qualify, you must have filed all required returns, and you can’t be in active bankruptcy or have a tax-related criminal conviction. The department reviews your income, expenses, assets, and liabilities to decide whether you can pay. If a payment plan would cover the full balance, expect the offer to be rejected. File Form 96-130 with the required financial documentation to begin.10Iowa Department of Revenue. Offer in Compromise Packet
If You Think the Balance Is Wrong
Don’t ignore a Notice of Assessment you believe is incorrect. The notice formally establishes the department’s position, and if you don’t respond within the deadline printed on it, the amount becomes final and your right to dispute it administratively goes away. File a written protest that explains why you disagree and attach supporting documents, such as amended returns or records that contradict the department’s figures. If the protest is denied, you can appeal to the Iowa courts, but the administrative protest is the first step and the cheapest. When a notice looks off, calling 866-339-7912 with questions before the deadline is a low-cost way to sort out whether you actually owe the amount.11Iowa Department of Revenue. Contact Iowa Department of Revenue
What Happens If You Leave the Balance Alone
Once a debt goes to collections, the department can levy your bank account, garnish up to 25% of your wages, place liens on your property, and intercept state and federal tax refunds, casino and sports wagering winnings, lottery prizes, and state vendor payments. It can also block your vehicle registration renewal, and businesses can lose or be denied a sales tax permit.9Iowa Department of Revenue. Collections
The one that catches people off guard: if you owe at least $1,000, your professional license can be suspended, revoked, or denied, and hunting, fishing, and other recreational licenses can be denied as well. Contractors, healthcare workers, and anyone else who needs a state license to earn a living can find themselves unable to work over a debt they thought could wait. If your balance is anywhere near that threshold, get the current number today and start on a plan.9Iowa Department of Revenue. Collections