What Indianapolis Gig Workers Actually Owe in Indiana Taxes and the September 15 Deadline
DoorDash, Uber, and Instacart drivers in Marion County carry a combined tax burden of roughly 20 cents on every net dollar earned this summer. Most have no idea the Q3 bill is already due.
DoorDash, Uber, and Instacart drivers in Marion County carry a combined tax burden of roughly 20 cents on every net dollar earned this summer. Most have no idea the Q3 bill is already due.
September 15 is not a suggestion. It’s the simultaneous deadline for two separate estimated tax payments — one to the IRS, one to the Indiana Department of Revenue — covering every dollar you earned as a gig worker between June 1 and August 31. Miss it by a day and you start accruing penalty interest from two taxing authorities at once. No grace period. No informal extension. No notice in advance.
Indianapolis is one of the larger Midwest markets for Uber, Lyft, DoorDash, Grubhub, and Amazon Flex, and Q3 is when the earnings pile up. The Indians’ home schedule, IMS events, and summer farmers market traffic keep delivery demand elevated through August — which means Q3 is also when Indianapolis gig workers’ exposure to underpayment penalties peaks.
No local outlet has put the full picture in one place: the federal obligation, Indiana’s parallel quarterly schedule, and the Marion County local income tax surcharge that most drivers have genuinely never heard of. This piece covers all three, with the actual numbers and the actual portals.
The Three-Layer Tax Bill
If you drove for DoorDash this summer in Indianapolis, you’re not dealing with one tax. You’re dealing with three, stacked.
When you work as an employee, your employer splits the Social Security and Medicare tax with you. As your own boss, you pay both halves. That’s the self-employment tax: 15.3% on your net earnings (gross gig income minus deductible business expenses), breaking down to 12.4% for Social Security and 2.9% for Medicare. It kicks in once net self-employment income exceeds $400.
Indiana taxes income at a flat statewide rate — 3.05% for 2024, dropping to 3.0% for 2025 as part of a phasedown the legislature approved. No brackets. Every dollar of net gig income taxed at the same percentage. As we note in our legal & finance coverage, these state and local obligations catch self-employed workers off guard more than almost any other tax issue.
Here’s where most drivers get blindsided. Indiana counties levy their own income taxes — called Local Income Taxes, or LIT — on top of the state rate. Marion County’s LIT rate is approximately 2.02%. Verify the current figure against Indiana DOR’s published county tax rate table at in.gov/dor before acting on this number; rates are set annually.
Stack them:
- Federal SE tax: 15.3%
- Indiana flat income tax: 3.05%
- Marion County LIT: ~2.02%
- Combined: roughly 20.4% on net gig income
That’s before federal income tax on top of SE tax. Your federal marginal bracket adds to the SE obligation — it doesn’t replace it. The 20% figure is the floor for most Indianapolis gig workers, not the ceiling. For quarterly estimated payments, 20–25% of net gig earnings is the right working target.
That combined rate doesn’t appear on TurboTax’s blog or the IRS’s gig economy page. It exists because you live in Indianapolis, in Marion County.
The Marion County LIT — The Bill Most Drivers Don’t Know Exists
Indiana’s county income tax follows your home address, not where you worked. The county LIT you owe is determined by where you lived on January 1 of the tax year — not where your car was when you accepted a delivery.
Lived in Indianapolis but spent the summer running Instacart shifts in Carmel or Plainfield? You still owe Marion County LIT on all of it, not Hamilton County’s or Hendricks County’s. This trips people up constantly, especially drivers who think of their tax geography as wherever they happen to be driving on a given day.
The county LIT is assessed on your Indiana income tax return. It doesn’t go to the City of Indianapolis directly, isn’t billed separately by Marion County, and has no separate filing portal. Payment flows entirely through Indiana DOR using the same IT-40ES estimated payment form you use for state income tax.
How to Calculate What You Owe for Q3
You don’t need a 1099-K or 1099-NEC to make an estimated payment. Those forms don’t arrive until January. September 15 doesn’t wait for paperwork. You calculate from your own records.
(The IRS has adjusted its 1099-K reporting threshold repeatedly in recent years. For estimated payment purposes it doesn’t matter — you owe tax on net income regardless of whether a 1099 is issued. Verify the current threshold at irs.gov before filing your annual return.)
To avoid underpayment penalties, you must pay either 90% of the tax you expect to owe for the full year, or 100% of the tax shown on last year’s return — whichever is easier to hit. If your prior-year adjusted gross income exceeded $150,000, that threshold rises to 110%. Indiana uses the same framework. Meet either safe harbor across all four quarterly payments and no underpayment penalty applies, even if you end up owing more at annual filing.
Here’s what the math looks like. A DoorDash driver nets $18,000 through August 31 after deducting vehicle mileage and other legitimate expenses. That suggests roughly $27,000 in net annual gig income. The Q3 period — June through August — accounts for about $6,750 of that.
Federal SE tax: $6,750 × 15.3% = $1,033. Indiana flat income tax: $6,750 × 3.05% = $206. Marion County LIT: $6,750 × 2.02% = $136. Total Q3 estimated payment: approximately $1,375, split across two transactions — $1,033 to the IRS and $342 to Indiana DOR (which covers both state and county LIT in a single state payment).
Federal income tax on top of SE tax depends on total household income and filing status. Add your expected bracket’s hit to the federal payment. If you’re not sure of your bracket, apply the 20–25% rule to net Q3 income and send that total, split between the two portals. It’s not precise accounting, but it’s real money going to the right places before the deadline — which is the point.
For a fuller picture of how Indiana’s rate changes affect take-home pay across income levels, see what Indiana’s 2026 income tax rates mean for Indianapolis workers and self-employed residents.
Where to Pay: Two Portals, Two Agencies, Two Separate Transactions
Go to directpay.irs.gov for the federal payment. Select “Estimated Tax” as the reason and “1040-ES” as the form. Provide your SSN, the payment amount, and bank information. Done.
For Indiana, use the INTIME portal at intime.dor.in.gov. One payment covers both Indiana flat income tax and Marion County LIT. If you’ve filed an Indiana return before, you can create an INTIME account using your SSN and a Letter ID from a prior DOR notice.
Here’s the catch: many gig workers who are new to self-employment have never received anything from Indiana DOR and have no Letter ID. If you hit that wall, call the Indiana DOR at 317-232-2240 before the deadline. Don’t assume you’ll sort it out later.
If you’d rather mail a paper payment, make the check payable to Indiana Department of Revenue and include the IT-40ES voucher. Verify the current mailing address at in.gov/dor or by calling 317-232-2240 first — mailing to a stale address is an avoidable mistake.
And this matters enough to say plainly: these are two completely separate transactions. Paying the IRS does not satisfy Indiana DOR. Paying Indiana DOR does not satisfy the IRS. Both must be completed independently by September 15.
What the Penalty Actually Costs
The IRS charges the federal short-term rate plus 3 percentage points, adjusted quarterly. As of mid-2024, that runs approximately 7–8% annualized on the underpaid amount, accruing from September 15 through the date you pay or through annual filing, whichever comes first. Verify the current rate against the most recent IRS Revenue Ruling before publication.
Indiana DOR charges its annually set rate on underpaid estimated amounts, calculated on the IT-2210 form. Historically that’s run 5–7% annualized, from the missed installment due date. Verify the current Indiana rate against current IT-2210 instructions at in.gov/dor before publication.
Missing September 15 triggers both penalties simultaneously. A driver who underpays by $1,000 federally and $300 on the state side is accruing interest to two agencies on two separate balances starting September 16. At annual filing, they face both underpayment penalties plus any remaining tax due, and Indiana may require the IT-2210 to be filed with the annual IT-40, adding paperwork on top of the cash hit.
A best-effort estimated payment by September 15 — even an imprecise one — beats nothing. An overpayment generates a refund. An underpayment generates penalties from two governments. Those outcomes are not equivalent.
Local Help in Indianapolis
IRS Taxpayer Assistance Center 575 N. Pennsylvania St., Indianapolis, IN 46204 (Minton-Capehart Federal Building). Appointments required — call 844-545-5640. Handles federal questions: estimated payments, penalty calculations, IRS account issues. They can’t help with Indiana DOR or Marion County LIT questions, and walk-ins are not accommodated. Don’t show up without an appointment, especially this close to a deadline.
Indiana Department of Revenue District Office 100 N. Senate Ave., Room N105, Indianapolis, IN 46204. Call 317-232-2240. This is your resource for state income tax questions, LIT, INTIME account problems, and IT-40ES guidance. If you’re a first-time Indiana DOR filer who can’t access INTIME, go here before September 15.
VITA / United Way of Central Indiana Dial 211 or visit uwci.org. Free tax help for households generally under about $67,000 annually. Worth knowing — but VITA operates primarily January through April. It’s probably not going to solve a Q3 estimated payment question this week. Call 211 to confirm current availability, and bookmark this for filing season in the spring.
Finding a CPA The Indiana CPA Society’s directory at incpas.org lets you search by specialty and location. A single consultation with a CPA who handles self-employment work — expect somewhere in the $150–$300 range in the Indianapolis market, though that varies — may be all it takes to set up a workable quarterly payment system. For drivers with more complex situations, free and low-cost legal help in Indianapolis organized by what you need includes referrals to tax assistance resources beyond the filing season. For a driver with straightforward gig income and no other business complications, that’s probably money well spent.
Quick-Reference Card
Q3 Estimated Tax Deadline September 15 (covers income earned June 1 – August 31)
Federal Self-Employment Tax Rate 15.3% on net earnings above $400 (12.4% Social Security + 2.9% Medicare)
Indiana Flat Income Tax Rate 3.05% for 2024 / 3.0% for 2025
Marion County Local Income Tax Rate ~2.02% (verify current rate at in.gov/dor)
Combined Approximate Tax Burden ~20–20.4% on net gig income, before federal income tax bracket effect
Recommended Set-Aside 20–25% of net gig income
Federal Payment Portal directpay.irs.gov
Indiana Payment Portal intime.dor.in.gov
Indiana Estimated Tax Form IT-40ES
Indiana DOR Paper Payment Verify current mailing address at in.gov/dor or call 317-232-2240 Payable to: Indiana Department of Revenue
IRS Taxpayer Assistance Center 575 N. Pennsylvania St., Indianapolis — appointments: 844-545-5640 — federal issues only
Indiana DOR District Office 100 N. Senate Ave., Room N105, Indianapolis — 317-232-2240 — state and county issues
VITA / Free Filing Help Dial 211 or uwci.org — primarily January–April
Federal Underpayment Penalty Rate ~7–8% annualized (verify current IRS quarterly rate)
Indiana Underpayment Penalty Rate ~5–7% annualized (verify current IT-2210 instructions)
Rates and portal procedures are subject to change. Verify the current Marion County LIT rate, Indiana DOR underpayment rate, and IRS underpayment rate against primary sources before filing. This article reflects information available at time of publication and is provided for informational purposes; consult a licensed tax professional for advice specific to your situation.
