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Last reviewed: August 23, 2026
Delaware estimated tax payments for 2026 are due April 30, June 15, September 15, 2026, and January 15, 2027, and you must file Form PIT-EST, the state's declaration of estimated income tax, once your expected Delaware tax beyond withholding exceeds $800. Both numbers surprise people trained on the federal system: the first installment is April 30, two weeks after the IRS date, and the trigger is $800, not $1,000. Miss an installment and Delaware charges 1.5% per month or any fraction of one, among the steepest state underpayment penalties in the country.
Key takeaways:
Save this cheat sheet — Delaware's 2026 numbers in one image.
The 2026 PIT-EST instructions put it plainly: estimated tax may be paid in full with the first declaration, or in equal installments on or before April 30, June 15, September 15, and January 15 of the following year.
| Installment | Share | Due date |
|---|---|---|
| 1 | 25% | April 30, 2026 (passed) |
| 2 | 25% | June 15, 2026 (passed) |
| 3 | 25% | September 15, 2026 |
| 4 | 25% | January 15, 2027 |
April 30 mirrors Delaware's own income tax return deadline, which is also April 30. The two-week gap behind the federal date cuts both ways: it buys new freelancers extra time in the spring, and it plants a wrong date in the head of anyone who assumes states shadow the IRS calendar. The remaining three dates do match the federal ones, so September 15 is a double-payment day for a Delaware freelancer: the state's installment 3 and federal Q3 on Form 1040-ES, two payments to two governments.
Cross the $800 line only mid-year and the schedule adjusts rather than punishing you: a first declaration due June 15, September 15, or January 15 (depending on when your income changed) splits the annual amount evenly across whatever dates remain.
Every resident and nonresident must make a declaration of estimated tax for 2026 if the Delaware tax due in excess of withholding can reasonably be expected to exceed $800. That is the Division of Revenue's own sentence, and it makes Delaware's trigger tighter than the federal $1,000 and the $1,000 Virginia adopted for 2026: a freelancer owing $900 to each government must pay Delaware quarterly while the IRS can wait until April.
In practice the filers are self-employed people and 1099 contractors, pass-through owners, landlords, and retirees whose pensions arrive without Delaware withholding. Retirees get real cushioning first, though: Delaware excludes $12,500 of pension and eligible retirement income per person for those 60 and over ($2,000 under 60), which keeps many below the $800 line entirely.
Nonresidents compute Delaware tax as though all income were Delaware income, then pay the percentage matching their Delaware-source share. Owning a Delaware LLC from another state does not by itself create Delaware-source income: a Texas consultant with a Delaware LLC and no Delaware clients owes PIT-EST nothing, though the LLC's own June 1 annual tax still applies, as our Delaware franchise tax guide explains.
Interactive
What should you pay Delaware each installment?
Enter your 2026 Delaware estimate, expected withholding, and 2025 Delaware tax — the smaller safe harbor sets the installment that keeps the 1.5%-per-month penalty away.
After the $110-per-exemption credits.
From W-2 jobs or pension payers.
Total tax from your 2025 return.
Your per-installment payment
$733
Based on 90% of your 2026 estimate — smaller, but it only protects you if the estimate holds.
Equal installments due April 30, June 15, September 15, 2026, and January 15, 2027, per the 2026 PIT-EST instructions. Prior-year option needs a full-12-month 2025 return; a zero-liability 2025 waives estimated payments entirely. Full-coverage row shows the worksheet amount (estimate ÷ 4) if you'd rather owe nothing at filing.
Plan all four Delaware payments in detailDelaware has no sales tax, and it funds that absence partly through a real income tax. The 2026 brackets from the PIT-EST tax computation schedule:
| Taxable income | Tax |
|---|---|
| $0 – $2,000 | $0 |
| $2,000 – $5,000 | 2.2% of excess over $2,000 |
| $5,000 – $10,000 | $66 + 3.9% of excess over $5,000 |
| $10,000 – $20,000 | $261 + 4.8% of excess over $10,000 |
| $20,000 – $25,000 | $741 + 5.2% of excess over $20,000 |
| $25,000 – $60,000 | $1,001 + 5.55% of excess over $25,000 |
| Over $60,000 | $2,943 + 6.6% of excess over $60,000 |
Two Delaware particulars shape the math. The standard deduction is small: $3,250 for single filers and $6,500 married filing jointly, plus $2,500 more if 65 or older or blind, so far more income stays taxable than federal intuition suggests. And exemptions are not deductions here; each federal exemption earns a $110 credit subtracted from the tax itself.
Elena, a freelance graphic designer in Wilmington, expects $75,000 of net profit in 2026 with no withholding:
Federal AGI: $75,000 profit − $5,299 deductible half of self-employment tax = $69,701 Delaware taxable income: $69,701 − $3,250 standard deduction = $66,451 Tax before credits: $2,943 + 6.6% × ($66,451 − $60,000) = $3,369 Minus one $110 personal credit: $3,259 expected 2026 Delaware tax
Well past the $800 trigger. The worksheet's answer is $3,259 ÷ 4 = $815 per installment to cover the full estimate; the safe-harbor section below shows why Elena can legally pay less. The Delaware quarterly tax calculator builds both numbers, state and federal, from your own projection.
No underpayment penalty applies if each installment is paid on time and meets one of these tests from the PIT-EST instructions:
Unlike Virginia, Delaware kept the federal-style high-income step-up, so a strong 2025 makes the prior-year route pricier here. Elena's 2025 Delaware tax was $3,000 with AGI under $150,000, and 90% of her 2026 estimate is $2,933, the smaller target: four installments of $733 keep her penalty-proof, with the balance due at filing.
Delaware's estimated tax system lives on the Delaware Taxpayer Portal at tax.delaware.gov. Direct debit from a checking or savings account is free, payments can be scheduled ahead up to the due date, and the system emails a confirmation plus a reminder before your next installment, which is the closest thing to autopilot any state offers. Credit cards work for payments up to $10,000.
Paying by mail means a Form PIT-EST voucher with a check payable to the Delaware Division of Revenue, sent to P.O. Box 830, Wilmington, DE 19899-0830, with your Social Security number and the tax period written on the check. A prior-year overpayment you rolled forward can be applied against installments in full starting with the first, or spread evenly across all four.
Delaware's penalty for underpaying an installment is 1.5% per month or fraction thereof until the shortfall is paid. Two properties make it bite harder than the phrase suggests. Annualized it is an 18% pace, roughly double Virginia's 9% and well above Ohio's 7%. And "fraction thereof" means there is no daily proration: a payment three days into a new month costs the full month's 1.5%.
Had Elena skipped her $733 April 30 installment and paid on August 22, the clock would span four months (May, June, July, and the August fraction): $733 × 1.5% × 4 = $44. Waiting until an April 2027 filing stretches it to twelve months and $132. The penalty can be waived for casualty, disaster, or other unusual circumstances, but only if you request abatement; the Division's processing won't spot the hardship on its own. The federal equivalent on Form 2210 accrues alongside for the same missed quarters.
At Anna Money, across 60,000+ small businesses, the pattern behind most tax penalties was misdirected attention: the famous obligation got paid while the boring one accrued. Delaware distills it, because its famous tax is the franchise tax and its boring one is PIT-EST.
No. Delaware personal estimated tax (Form PIT-EST) is a prepayment of an individual's income tax, while the franchise tax is a levy on corporations for the privilege of incorporating in Delaware, due March 1, with LLCs paying a flat $300 annual tax by June 1. The two share nothing but the state: different taxpayers, different portals, different deadlines. An incorporated founder living in Delaware may genuinely owe three streams: PIT-EST on salary and distributions, the corporation's franchise tax, and federal estimates.
"Delaware has no taxes" deserves the same correction. The state has no sales tax, and that is where the folklore ends: personal income tax reaches 6.6% above $60,000 of taxable income, and businesses selling goods or services pay a separate gross receipts tax on revenue.
April 15 and $1,000 are the wrong constants here. Delaware's declaration is due April 30 and the trigger is $800, straight from the 2026 instructions; a plan built on federal defaults starts one installment late with a threshold that never applied.
Paying the LLC's $300 in June settles nothing on the personal side, and four PIT-EST vouchers settle nothing for the entity. Each stream misses its own deadlines independently, and each accrues its own penalties.
Because a fraction of a month counts as a month, mailing a payment on July 2 instead of June 30 books another full 1.5%. Under a daily-accrual regime like Ohio's, two days cost pennies; in Delaware they cost half a quarter's penalty.
Once 2025 federal AGI passes $150,000, the prior-year harbor demands 110%. Paying exactly 100% feels safe, misses the step-up, and surfaces as an underpayment on every installment at once.
Delaware's brackets, credits, and low standard deduction make its estimate math fussier than the flat-tax states, and it starts earlier in the spring than anywhere else. Jupid connects to your business bank account, categorizes transactions with 95.9% accuracy, and turns real year-to-date profit into a live picture of what Delaware and the IRS will each expect. Ask the AI accountant in WhatsApp or iMessage "what should my September 15 payments be?" and you get both answers, split correctly, before the fraction-of-a-month clock starts. Try Jupid.
This guide is for general educational purposes and does not constitute tax, legal, or accounting advice. Estimated tax obligations depend on residency, income sources, filing status, and withholding, and nonresident calculations involve Delaware-source apportionment beyond this guide's scope. For advice specific to your situation, consult a qualified tax professional or the Delaware Division of Revenue at revenue.delaware.gov.
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Fintech CEO with 10+ years building accounting and financial technology products. Previously co-founded and scaled an AI-powered accounting platform to $30M revenue and 100K+ business users, achieving 30,000 customers per accountant through automation — recognized by CNBC as a top fintech company. Holds a Master's in Management Information Systems. At Jupid, he leads the development of AI-native bookkeeping, tax, and compliance tools designed for freelancers and small business owners.
Georgia estimated taxes 2026: due April 15, June 15, Sept 15, Jan 15. Form 500-ES, the 70% safe harbor, 9% penalty, and the new 4.99% flat rate from HB 463.
Ohio estimated taxes 2026: due Apr 15, Jun 15, Sep 15, Jan 15 if you'll owe $500+. First flat-tax year at 2.75%, school district SD 100ES rules, 7% penalty.
Minnesota estimated taxes 2026: the $500 trigger, due dates through January 15, the 90%/100%/110% safe harbor, 7% rate, and the January 31 escape hatch.
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