Quarterly estimates, payroll returns, 1099s, your S-Corp return and state filings all go on one calendar, built for your entity and your state. Due Days reminds you early and shows what to pay, and you keep the proof in one place.
As of Oct 23, 2026 · reminders on
PayrollOct 31 falls on a Saturday, so it's due Monday
StateMonthly filer · example state
StateS-Corp entity-level estimate · $1,200
FederalOwner estimate · $8,200 (safe harbor)
PayrollJan 31, 2027 falls on a Sunday · 6 contractors
FederalOr file Form 7004 to extend to Sep 15
AnnualSecretary of State · example state
The IRS, your state tax agency, your payroll agency and the Secretary of State each keep their own calendar. Your business has to follow all of them.
A typical S-Corp with payroll owes four quarterly estimates, quarterly 941s, year-end W-2s and 1099s, a 1120-S with K-1s, plus state returns and annual reports.
Federal, state income tax, state payroll, sales tax and the Secretary of State all have different portals, due dates and weekend rules.
A late 1120-S is penalized per shareholder, per month, even when no tax is owed. Missed estimates add underpayment interest, and a missed annual report can put your entity out of good standing.
Penalty rules come from published IRS guidance and change every year. Check the current figures with your tax professional.
Answer a few questions about your business and Due Days builds your calendar for the year.
S-Corp, LLC, C-Corp or sole prop, plus your state, payroll schedule and sales-tax frequency. You only see the deadlines that apply to you.
Email, SMS or a calendar feed (Google, Outlook, Apple) at 30, 7 and 1 day out. Reminders keep going until it's marked done.
Safe-harbor and actual-income methods for 1040-ES, plus state estimates. You see what to pay each quarter and what you've already paid.
Attach the e-file acknowledgment or payment receipt to each item. At year end, your CPA gets one tidy folder.
See every client's upcoming deadlines on one screen, assign owners and invite clients to view only their own items.
Due dates move to the next business day automatically. When an agency announces disaster relief, affected dates are flagged.
Entity type, state, whether a payroll provider files for you and how often you file sales tax. Takes about five questions.
Every due date and estimated amount for the next 12 months goes on one timeline, which you can subscribe to from your own calendar.
When a reminder comes in, pay or file, attach the receipt and mark it done. Next year's calendar builds itself.
Due Days does this math for every quarter, then reminds you before each payment date.
These are example tiers for this concept and aren't final. Billing isn't live.
Example pricing only. Annual billing would save about 2 months.
No. Due Days tells you what's due and when, estimates what to pay, and stores your proof. You or your tax pro still file and pay through the IRS, your state and your payroll provider.
The plan is to cover federal deadlines plus all 50 states and DC, starting with the states that have the most small businesses. Tell us your state when you join the waitlist.
Tell us during setup and those items switch to "handled by provider." You still see them so you can confirm they were filed, but they won't send reminders.
No. Due Days is a deadline and organization tool. Dates follow published agency calendars, and estimates are planning figures. Confirm anything specific to your situation with a CPA or enrolled agent.
Yes. Owners can invite a pro with read-only access, and the Bookkeeper plan is built for firms that track deadlines across many clients.
You can export everything (calendar, amounts and documents) at any time. We never ask for IRS or bank logins.
Join the waitlist and we'll let you know when Due Days opens for your state.