| Deadline / Date | Title | Counterpary | Penalties | Link to additional details |
| Wednesday, April 15, 2026 | Federal Quarterly Estimated Taxes 1st Est | Interal Revenue Service | see tax agency information | https://www.irs.gov/businesses/small-businesses-self-employed/estimated-taxes |
| Monday, June 15, 2026 | Federal Quarterly Estimated Taxes 2nd Est | Interal Revenue Service | see tax agency information | https://www.irs.gov/businesses/small-businesses-self-employed/estimated-taxes |
| Tuesday, September 15, 2026 | Federal Quarterly Estimated Taxes 3rd Est | Interal Revenue Service | see tax agency information | https://www.irs.gov/businesses/small-businesses-self-employed/estimated-taxes |
| Friday, January 15, 2027 | Federal Quarterly Estimated Taxes 4th Est | Interal Revenue Service | see tax agency information | https://www.irs.gov/businesses/small-businesses-self-employed/estimated-taxes |
| see tax agency information | State Quarterly Estimated Taxes | Franchise Tax Board, Nevada Dept of Taxation | see tax agency information | https://www.ftb.ca.gov/file/when-to-file/due-dates-business.html |
| Wednesday, April 15, 2026 | Annual Federal Income Tax Filings | Interal Revenue Service | see tax agency information | https://www.irs.gov/businesses |
| Wednesday, April 15, 2026 | Estate or Trust Return Filing | Franchise Tax Board, Nevada Dept of Taxation | see tax agency information | https://www.ftb.ca.gov/file/personal/filing-situations/estates-and-trusts/index.html |
| Saturday, February 28, 2026 | 1099-NEC / 1099-MISC Paper Filing | Interal Revenue Service | $60 to $660 fee depending on the business size and time of filing | https://www.irs.gov/instructions/i1099mec |
| Tuesday, March 31, 2026 | 1099-NEC / 1099-MISC E Filing | Interal Revenue Service | $60 to $660 fee depending on the business size and time of filing | https://www.irs.gov/instructions/i1099mec |
| Saturday, January 31, 2026 | W-2 Filing & Payroll Tax | Interal Revenue Service | $60 to $660 fee depending on the business size and time of filing | https://www.irs.gov/forms-pubs/about-form-w-2 |
| Thursday, April 30, 2026 | State Sales & Use Tax Deadline (CA) 1st Est | California Department of Tax and Fee Administration | 10% or more | https://www.cdtfa.ca.gov/taxes-and-fees/sutprograms.htm |
| Friday, July 31, 2026 | State Sales & Use Tax Deadline (CA) 2nd Est | California Department of Tax and Fee Administration | 10% or more | https://www.cdtfa.ca.gov/taxes-and-fees/sutprograms.htm |
| Saturday, October 31, 2026 | State Sales & Use Tax Deadline (CA) 3rd Est | California Department of Tax and Fee Administration | 10% or more | https://www.cdtfa.ca.gov/taxes-and-fees/sutprograms.htm |
| Saturday, January 31, 2026 | State Sales & Use Tax Deadline (CA) 4th Est | California Department of Tax and Fee Administration | 10% or more | https://www.cdtfa.ca.gov/taxes-and-fees/sutprograms.htm |
| Saturday, January 31, 2026 | State Sales & Use Tax Deadline (CA) Due date when paying annually | California Department of Tax and Fee Administration | 10% or more | https://www.cdtfa.ca.gov/taxes-and-fees/sutprograms.htm |
| Last day of the following month | State Sales & Use Tax Deadline (CA) Due date when paying monthly | California Department of Tax and Fee Administration | 10% or more | https://www.cdtfa.ca.gov/taxes-and-fees/sutprograms.htm |
| 3rd Monday in August (2026: Aug 17) | Property tax Deadline (Washoe County) 1st installment | Washoe County | 10 day grace period before penalty, see county resource for details | https://www.washoecounty.gov/treas/Billing.php? |
| 1st Monday in October (2026: Oct 5) | Property tax Deadline (Washoe County) 2nd installment | Washoe County | 10 day grace period before penalty, see county resource for details | https://www.washoecounty.gov/treas/Billing.php? |
| 1st Monday in January (2027: Jan 4) | Property tax Deadline (Washoe County) 3rd installment | Washoe County | 10 day grace period before penalty, see county resource for details | https://www.washoecounty.gov/treas/Billing.php? |
| 1st Monday in March (2027: Mar 1) | Property tax Deadline (Washoe County) 4th installment | Washoe County | 10 day grace period before penalty, see county resource for details | https://www.washoecounty.gov/treas/Billing.php? |
| 3rd Monday in August (2026: Aug 17) | Property Tax – 1st Installment (or full payment if electing) | Douglas County Clerk-Treasurer | Penalties & interest if paid after grace period (10 days); possible tax lien/sale consequences | Douglas County Property Tax Payment Calendar/Dates |
| 1st Monday in October (2026: Oct 5) | Property Tax – 2nd Installment | Douglas County Clerk-Treasurer | Late payment interest/penalties | Douglas County Property Tax Payment Calendar/Dates |
| 1st Monday in January (2027: Jan 4) | Property Tax – 3rd Installment | Douglas County Clerk-Treasurer | Interest/penalties & potential enforcement | Douglas County Property Tax Info & Due Dates |
| 1st Monday in March (2027: Mar 1) | Property Tax – 4th Installment | Douglas County Clerk-Treasurer | Interest/penalties | Douglas County Property Tax Payment Calendar/Dates |
| Annual (by end of anniversary month each year) | Nevada State Business License Renewal | Nevada Secretary of State | Late fee (e.g., ~$100–$175 depending on entity), default/revocation status | NV Secretary of State Business License FAQs & Renewal Rules |
| 20th day of month following each tax period | Sales & Use Tax Filing & Payment (monthly/quarterly/annual depending on business) | Nevada Department of Taxation | Penalty + interest per NAC; potential tax assessment | Nevada Sales & Use Tax Deadline Info (AB 594) |
| August 14, 2026 | Nevada Commerce Tax Return | Nevada Department of Taxation | Penalty + interest; loss of exemption | Nevada Commerce Tax Return Instructions & Filing Info |
| Business Personal Property Declaration | Douglas County Assessor | Penalty for late/missing filing & valuation based on “best information available” | Douglas County Business Personal Property Declaration Info |
*Due dates which fall on a weekend are extended to the next business day.
*This information is not intended to be tax, legal, financial or compliance advice. Be sure to consult a tax professional when making tax decisions.
ADC & Associates Banking Holiday Tracker
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