Tax Notification Mailing Services

Send IRS responses, tax returns, payments, audit documents, state tax correspondence, and other important tax letters online with documented USPS mailing records.

Tax correspondence often involves sensitive documents, firm response dates, and records that may be needed years later. Whether you are responding to an IRS notice, submitting documents to a state department of revenue, or mailing notices to taxpayers, a clear mailing record can be an important part of the process.

Send Certified Mail helps taxpayers, CPAs, enrolled agents, tax attorneys, accounting firms, payroll providers, businesses, and government tax offices send important tax mail online.

Upload your completed PDF letter and select the appropriate USPS service. Send Certified Mail handles the printing, envelope preparation, postage, mailing, tracking, reporting, and secure online record storage.

Eligible letters submitted before the daily cutoff can be printed and mailed the same business day. For USPS Certified Mail, Send Certified Mail also secures the first USPS Acceptance Scan, creating a USPS record that the mail piece entered the postal network.

Important: Tax filing, payment, appeal, and response requirements vary. Always follow the instructions printed on the tax notice, form, or government website. Send Certified Mail provides mailing and record-management services but does not provide tax or legal advice.

What Is Tax Notification Mail?

Tax notification mail includes letters and documents sent between taxpayers, tax professionals, businesses, government agencies, and other parties involved in a tax matter.

Some tax correspondence is informational. Other letters may request a response, supporting documents, payment, appeal, or another action by a stated deadline.

Tax-related mail may include:

• Responses to IRS notices and letters
• Federal income tax returns
• Amended tax returns
• Tax forms and supporting documents
• Payments and payment vouchers
• Audit responses
• Appeal documents
• Penalty abatement requests
• Installment agreement correspondence
• Collection and balance-due correspondence
• State income tax documents
• Sales and use tax correspondence
• Payroll tax documents
• Property tax notices
• Delinquent tax notices
• Tax lien and levy correspondence

The required mailing address and service can differ by form, notice, tax year, agency, and taxpayer location. Verify all instructions before submitting the mailing.

Sending Correspondence to the IRS

The Internal Revenue Service sends notices and letters for many reasons. A notice may ask a question about a federal tax return, explain a change to an account, request supporting information, or state that a balance is due.

When the notice requests a response by mail, taxpayers should carefully follow the instructions printed on the notice. The response should be sent to the address shown on that specific letter rather than to a general IRS mailing address.

The taxpayer should also include any requested forms, response pages, explanations, or supporting documents. Keeping a copy of the complete response package can help create a more organized tax record.

Learn more from the IRS guidance for taxpayers who receive an IRS notice or letter .

Before Mailing an IRS Notice Response

• Read the complete notice.
• Confirm whether a response is required.
• Identify the stated response date.
• Use the mailing address printed on the notice.
• Include the requested response form or notice page.
• Add all supporting documents requested by the IRS.
• Keep a copy of everything being mailed.
• Select a mailing service that meets the applicable instructions.
• Retain the mailing and tracking records.

Common Tax Notices Sent by Government Agencies

Federal, state, and local tax agencies send many types of taxpayer communications. The name and delivery method depend on the agency and purpose of the notice.

Examples may include:

• Balance-due notices
• Requests for additional information
• Tax return adjustment notices
• Notices of deficiency
• Collection notices
• Intent-to-levy notices
• Tax lien notices
• Audit notices
• Appeal decisions
• Determination letters
• Penalty notices
• Identity verification requests
• Unfiled tax return notices
• Delinquent property tax notices
• Tax sale and redemption notices

Some government notices may be sent by Certified Mail because the agency needs a documented record of mailing, delivery, or attempted delivery. Other notices may be sent by First-Class Mail or another legally permitted method.

Common Tax Documents Sent Through Send Certified Mail

Send Certified Mail can process many types of completed tax letters, forms, and supporting records.

Senders remain responsible for confirming whether the document is eligible for paper filing and whether the receiving agency requires a specific form, address, delivery service, or payment method.

Who Uses Tax Notification Mailing Services?

Individual Taxpayers

Individual taxpayers may need to respond to a notice, submit supporting information, send an amended return, appeal an IRS decision, or mail another time-sensitive tax document.

Certified Public Accountants

CPAs may manage tax correspondence for many clients. Send Certified Mail helps accounting firms process letters online and keep mailing records connected to each client matter.

Enrolled Agents and Tax Preparers

Enrolled agents and professional tax preparers may send notice responses, amended returns, supporting documents, and account correspondence for individuals and businesses.

Tax Attorneys and Law Firms

Tax attorneys may send protests, appeals, collection responses, settlement correspondence, audit documents, and other legal tax communications.

Businesses and Corporate Tax Departments

Businesses may need to mail payroll tax documents, sales tax correspondence, audit responses, tax returns, payment records, and notices involving federal, state, or local tax obligations.

Payroll and Accounting Service Providers

Payroll companies and outsourced accounting teams may handle recurring tax correspondence for many business clients. Batch processing and SFTP automation can help manage larger mailing volumes.

Federal, State, and Local Tax Agencies

Government agencies may send assessment notices, balance-due letters, property tax notices, audit correspondence, lien notices, appeal decisions, and other taxpayer communications.

How to Send a Tax Letter Online

Send Certified Mail replaces many manual mailroom steps with one online workflow.

1. Prepare the tax correspondence. Complete the required letter, form, payment voucher, or supporting documents.
2. Confirm the mailing instructions. Check the notice or official agency instructions for the correct address, response date, and delivery method.
3. Save the mailing as a PDF. Review all pages and keep a separate copy for your records.
4. Upload the document. Sign in to Send Certified Mail and upload a single PDF or a group of letters.
5. Enter the mailing address. Add the address exactly as it appears in the notice or filing instructions.
6. Select a USPS service. Choose Certified Mail, First-Class Mail, Priority Mail, or Priority Mail Express based on the applicable instructions.
7. Add optional services. Select an Electronic Return Receipt when signature documentation is needed and available.
8. Review and submit the mailing. Confirm the document, address, return address, and selected service.
9. Access the mailing records online. Review available tracking, delivery, signature, and transaction records from your account.

Send Certified Mail prints the documents, prepares the envelope, applies postage, and presents the letter to the United States Postal Service.

Why Use USPS Certified Mail for Tax Correspondence?

USPS Certified Mail is commonly used when a taxpayer or tax professional wants a documented record that an important letter was mailed.

Certified Mail can provide:

• A unique USPS tracking number
• Evidence that the item was mailed
• USPS tracking activity
• Delivery or attempted-delivery information
• Optional recipient signature documentation
• An optional Electronic Return Receipt

USPS explains that Certified Mail can show that an item was sent and when it was delivered or when delivery was attempted. When combined with Return Receipt service, it can also provide an electronic or physical delivery record with a recipient signature.

Certified Mail does not prove the contents of an envelope by itself. Taxpayers and tax professionals should keep a complete copy of the letter and all supporting documents in their own records.

The Importance of the First USPS Acceptance Scan

Printing a Certified Mail label or purchasing postage does not, by itself, show that USPS received the letter.

Send Certified Mail presents processed Certified Mail pieces to USPS and secures the first USPS Acceptance Scan. This creates a USPS tracking event showing that the mail piece entered the postal network.

That record can be especially valuable when a tax response, appeal, return, or payment has a firm mailing date.

Taxpayers should still review the rules that apply to the specific submission. A mailing record does not correct an inaccurate address, incomplete filing, missing signature, insufficient payment, or late submission.

Same-Business-Day Mailing for Time-Sensitive Tax Documents

Tax notices often provide a limited period to respond. Waiting for an employee to prepare envelopes or make a Post Office trip can reduce the time available to complete the mailing.

Eligible letters submitted before the applicable daily cutoff are printed, prepared, and mailed the same business day.

This full-service process can help taxpayers and tax professionals move an approved response into the mail without completing Certified Mail forms, applying labels, or waiting in line at the Post Office.

Proof of Mailing, Tracking, and Delivery Documentation

A tax mailing record may be needed during a later audit, appeal, collection matter, client review, or account investigation.

Depending on the service selected and the available USPS data, Send Certified Mail users may access:

• The first USPS Acceptance Scan
• Certified Mail tracking numbers
• USPS tracking history
• Delivery attempts
• Delivery confirmation
• Electronic Delivery Confirmation Reports
• Proof-of-mailing records
• Proof-of-delivery records
• Electronic Return Receipts
• Recipient signature information
• Mail manifests
• Tracking summary reports
• Transaction and accounting reports
• Archived letter records

These digital records are easier to search and retrieve than loose receipts, handwritten tracking logs, or paper green cards.

Electronic Return Receipts for Tax Documents

An Electronic Return Receipt provides digital delivery and signature information when the service is selected and USPS captures a signature.

Many accounting firms, tax professionals, and legal teams prefer an Electronic Return Receipt over a traditional paper green card. The digital record can be downloaded, stored, shared, and added to the taxpayer or client file.

It also removes the need to wait for a paper card to return through the mail. Availability and delivery results depend on USPS processing and the destination.

Certified Mail, First-Class Mail, and Expedited Tax Mail

Not every tax document must be sent by the same mail service. Send Certified Mail supports several USPS options from one online account.

USPS Certified Mail

Certified Mail can be used when a sender wants proof of mailing, USPS tracking, delivery activity, or optional Return Receipt service.

USPS First-Class Mail

First-Class Mail may be used for tax letters that do not require Certified Mail tracking or signature documentation.

USPS Priority Mail

Priority Mail may be appropriate for larger document packets, heavier envelopes, or mailings that need faster USPS delivery.

USPS Priority Mail Express

Priority Mail Express is available for urgent mailings that require an expedited USPS service.

The sender should confirm that the selected service is permitted for the document and deadline involved.

Secure 10-Year Tax Mailing Record Archive

Tax correspondence may be reviewed long after the original mailing. Records may be requested during an audit, appeal, collection action, client inquiry, or internal compliance review.

Send Certified Mail securely stores available mailing and letter records online for up to 10 years.

Authorized users can retrieve available:

• Archived PDF letters
• Tracking history
• Acceptance Scan records
• Electronic Return Receipts
• Delivery reports
• Mail manifests
• Accounting reports
• Transaction history

This centralized archive helps tax professionals and organizations reduce paper storage while keeping mailing records available for future reference.

High-Volume Tax Notification Mailing

Accounting firms, payroll providers, financial institutions, tax service companies, and government agencies may need to send hundreds or thousands of tax letters.

Send Certified Mail supports high-volume workflows through:

• Multiple PDF letter uploads
• Excel batch processing
• CSV-based mailing data
• Batch proof review
• Reusable mailing profiles
• Address-book tools
• Secure SFTP automation
• Centralized mail manifests
• Tracking summary reports
• Multiple authorized account users

These options can reduce repetitive data entry and provide a more consistent process for recurring tax notification programs.

Tax Notice Mailing Services for Government Agencies

State departments of revenue, county tax collectors, city finance departments, municipal agencies, and other public offices may need to send large volumes of taxpayer notices.

Common government tax mailings include:

• Assessment notices
• Balance-due notices
• Delinquent tax notices
• Payment demand letters
• Tax lien notices
• Intent-to-levy notices
• Property tax notices
• Tax sale notices
• Redemption notices
• Audit and examination letters
• Appeal decisions
• Licensing and account notices

Send Certified Mail can manage the printing, envelope preparation, postage, mailing, tracking, reporting, and record storage for these projects.

For eligible large First-Class Mail projects, notarized Affidavits of Mailing may also be available. Government agencies should confirm all applicable statutes, regulations, procurement requirements, and documentation standards before approving a mailing process.

Why Tax Professionals Choose Send Certified Mail

Send Certified Mail is more than an online postage service. It is a full-service compliance mailing platform that manages both the physical mail piece and the related online records.

Taxpayers and tax professionals use Send Certified Mail to:

• Send IRS responses online
• Mail completed tax documents from a PDF
• Use USPS Certified Mail and First-Class Mail
• Reduce printing and envelope preparation
• Eliminate routine Post Office trips
• Secure the first USPS Acceptance Scan
• Access USPS tracking online
• Use Electronic Return Receipts
• Document mailing and delivery activity
• Process eligible letters the same business day
• Manage individual and high-volume tax mailings
• Automate recurring workflows through secure SFTP
• Centralize records across users and office locations
• Store available mailing records for up to 10 years

Whether you are responding to one IRS notice or processing thousands of taxpayer letters, Send Certified Mail helps create a more organized and documented mailing workflow.

Frequently Asked Questions About Tax Notification Mailing

Send Important Tax Documents Online

Send Certified Mail helps taxpayers, CPAs, enrolled agents, tax attorneys, accounting firms, businesses, payroll providers, and government agencies manage important tax mail through one secure online platform.

Upload your completed PDF and let Send Certified Mail handle the printing, envelope preparation, postage, mailing, USPS tracking, reporting, and secure record retention.

Create a free account today to send your tax correspondence online.

For larger or recurring mailing projects, schedule a complimentary, custom Live Demo with a member of our Customer Support Team today.