Workiva is the best sec filing software for most large public companies, with DFIN ActiveDisclosure close behind for teams that live in Word and Excel, and IRIS CARBON is the clearest choice when you want a published starting price. Almost every enterprise vendor here hides its price behind a sales quote, so budget planning starts with a demo and a written quote, not a price page. IRIS CARBON is the only vendor here with a public list price on its own site, at $25,000 per year, the one fixed anchor in a market of custom quotes.
Every tool here turns linked financial data into a tagged, checked document that EDGAR will accept, but they differ in where the work happens, who does the tagging, and how the price is set. The unique fact that shapes this market is that only one vendor here publishes a list price on its own site, IRIS CARBON at $25,000 per year, while every other enterprise platform asks buyers to request a quote.
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Best sec filing software: comparison table
Swipe the table sideways on a phone to see every column.
| # | Name | Best for | Starting price | Free plan / trial | Link |
|---|---|---|---|---|---|
| 1 | Workiva | Large public companies unifying SEC, ESG and audit reporting | quote only | No | Visit |
| 2 | DFIN ActiveDisclosure | Finance teams that draft SEC filings in Word and Excel | quote only | No | Visit |
| 3 | Certent Disclosure Management | SEC and proxy reporting tied to equity data | quote only | No | Visit |
| 4 | Toppan Merrill Bridge | Companies wanting managed filing services plus software | quote only | No | Visit |
| 5 | IRIS CARBON | Teams wanting a published annual price and expert tagging help | $25,000 per year | No | Visit |
| 6 | RDG Filings | Teams wanting software plus a full-service filing agent | quote only | No | Visit |
| 7 | Ez-XBRL Integix | AI-assisted iXBRL tagging for SEC filings | quote only | No | Visit |
| 8 | Arelle | Validating XBRL filings against SEC EDGAR rules for free | $0 | Yes | Visit |
The 8 best best sec filing software tools, in detail
Workiva
Best for: Large public companies unifying SEC, ESG and audit reporting
Workiva is the connected reporting platform most large filers know by name, and it links source data to documents. When a number changes in the source, the same linked value updates in the 10-K, the earnings release and related reports, which cuts copy and paste errors during filing week. XBRL tagging happens inside the document, with validation, permissions and audit trails as you work.
- The platform covers SEC reporting for Form 10-K, 10-Q, 8-K and proxy work, plus ESG reporting, internal audit and risk reporting.
- That breadth is the main trade-off.
- A small filer that only needs a 10-K and a 10-Q will carry modules it may never use, and setup takes planning.
- Workiva sells through a quoted sales process with solution-based licensing, so price depends on modules and user count.
Pros
- Linked data flows into the 10-K, earnings release and ESG report from one source
- XBRL tagging and validation run inside the document
Cons
- No published price, so budgeting needs a sales quote
- enterprise breadth can be more than a small filer needs
DFIN ActiveDisclosure
Best for: Finance teams that draft SEC filings in Word and Excel
DFIN, Donnelley Financial Solutions, is one of the largest SEC filing agents, and ActiveDisclosure is its cloud tool for preparing financial, regulatory and ESG reports. Teams draft in Word and Excel, link numbers from spreadsheets into the document, and keep review steps in one place. DFIN also sells filing services, so a team can pair the software with hands-on help when a deadline is tight.
- ActiveDisclosure covers 10-K, 10-Q, 8-K and proxy work, with XBRL tagging and EDGAR submission built in.
- DFIN markets it on subscription or per-filing usage plans, and neither model publishes a list price, so cost depends on the plan, the filing count and
- A team with many filings and amendments should ask how each extra filing is charged before signing.
- Choose it when your team already works in Word and Excel and wants a vendor that can also act as a filing agent.
Pros
- Drafting stays in familiar Word and Excel workflows
- DFIN also offers filing services and ArcSuite for fund disclosures
Cons
- No published price, so budgeting needs a sales quote
- per-form or per-year pricing can rise with filing volume
Certent Disclosure Management
Best for: SEC and proxy reporting tied to equity data
Certent Disclosure Management, now part of insightsoftware, covers drafting, XBRL tagging, review and EDGAR filing for recurring multi-author reports, with its clearest strength in the link to equity data. Where the 10-K and proxy draw heavily on equity compensation figures, Certent keeps that data connected to the narrative, which cuts manual rekeying. Drafting stays in Word and Excel, with live validation as tags are added.
- The platform supports US GAAP and IFRS taxonomies, plus ESEF work for European filings, and it is certified by XBRL US for report creation.
- It is sold as a cloud service with per-seat or per-department subscription pricing, and no list price is published, so buyers need a quote based on us
- The Certent homepage now leads with equity management rather than disclosure, so SEC buyers should confirm they are evaluating the disclosure product
- Choose it when equity data feeds your proxy and your 10-K.
Pros
- Deep Microsoft Office integration for drafting and tagging
- strong link between equity compensation data and the proxy statement
Cons
- No published price, so budgeting needs a sales quote
- the vendor homepage now leads with equity management, so buyers must confirm the disclosure fit
Toppan Merrill Bridge
Best for: Companies wanting managed filing services plus software
Toppan Merrill Bridge is a Microsoft Office integrated platform for SEC and global regulatory disclosures, with real-time collaboration, XBRL and iXBRL tagging and EDGAR filing. The vendor has guided filers for more than 55 years. Bridge handles collaborative drafting with comment reconciliation, while the managed services team can take a filing from draft to submission when the in-house team is short on time or XBRL skill.
- Bridge also covers capital markets transactions, proxies and other regulatory disclosures, and the related Quinn platform handles collaborative docume
- Pricing is quote-based and varies with the engagement, so a company should ask what is bundled in the software fee and what is charged as a service.
- That service layer is a strength during filing week and a limit for teams that want a light, self-serve tool with a fixed annual fee.
- Choose it when you want experts on call during filing week, especially around IPOs and complex transactions.
Pros
- Microsoft Office integration with real-time collaboration and XBRL tagging
- managed services team can take a filing to EDGAR submission
Cons
- No published price, so budgeting needs a sales quote
- service-heavy model is less of a pure self-serve product than the platform players
IRIS CARBON
Best for: Teams wanting a published annual price and expert tagging help
IRIS CARBON is the only tool in this set with a public list price. The vendor site lists a product price of $25,000, and its pages describe a single flat annual fee that covers unlimited pages, filings and revisions, with expert-led XBRL and iXBRL tagging included. The platform is built on Microsoft 365, so teams keep working in Word and Excel while collaborating in real time.
- IRIS CARBON supports SEC, ESEF, FERC, UK and South African filings, which suits groups that file in more than one jurisdiction.
- It also offers 24/7 support.
- There is no free plan, so a small filer must be ready to commit the full annual fee.
- Buyers should confirm the scope in writing.
Pros
- Published list price of $25,000 per year on the vendor site
- flat annual fee covers unlimited pages, filings and revisions with expert tagging help
Cons
- No free plan, so the entry cost is the full annual fee
- buyers still need to confirm which filing types and taxonomies the quoted scope covers
RDG Filings
Best for: Teams wanting software plus a full-service filing agent
RDG Filings sells a hybrid for teams that would rather hand the filing over than run it themselves. ThunderDome is its cloud platform, with Excel-linked documents, multi-user collaboration and iXBRL tagging, backed by a US-based team of CPAs and filing specialists who can take the whole filing off your hands. The vendor advertises flat-rate pricing rather than metered billing.
- Flat-rate pricing still means requesting a quote, because the rate depends on the filing type, the document size and the service level.
- A team that only wants software will carry a service layer it does not use.
- RDG covers 10-K, 10-Q, 8-K and related SEC filings.
- Choose RDG when you want a named team behind the software during filing week.
Pros
- ThunderDome cloud platform with Excel-linked documents and iXBRL tagging
- US-based team of CPAs and filing specialists can handle the whole filing
Cons
- No published price, so the flat rate still needs a quote
- value depends on wanting the service layer, not software alone
Ez-XBRL Integix
Best for: AI-assisted iXBRL tagging for SEC filings
Ez-XBRL Integix is a cloud platform for iXBRL and XBRL tagging for filers who need accuracy without a large in-house XBRL team. Its flagship, Integix, uses patented AI models to convert prior EDGAR and XBRL files to Inline XBRL format, and it pairs with XOR, a cloud review tool for collaboration, validation and version comparison. The vendor supports a wide set of SEC filing types, including 10-K, 10-Q, 20-F, 40-F, S-1, 8-K, 6-K, proxy filings, Form 13F, Schedules 13D and 13G, and Section 16 Forms 3, 4 and 5.
- The SEC upgraded EDGAR to Release 26.3 on September 14, 2026, and published draft 2027 SEC taxonomies the same day, with feedback open until November
- Pricing is custom-quoted.
- Choose it when AI-assisted tagging and a dedicated review tool are the priority.
Pros
- Agentic AI tagging converts prior EDGAR and XBRL files to Inline XBRL in minutes
- XOR review tool supports collaboration and validation
Cons
- No published price, so budgeting needs a sales quote
- three brand names, Ez-XBRL, Integix and XOR, can confuse first-time buyers
Arelle
Best for: Validating XBRL filings against SEC EDGAR rules for free
Arelle is the open-source XBRL platform much of the industry relies on, and it is the only free tool in this set. It validates XBRL and iXBRL filings against the SEC EDGAR filing rules, catching errors that get submissions rejected. It runs as a desktop application, a command line tool, a Python API and a web service, and it supports XBRL v2.1, Dimensions, Formula and newer formats such as xBRL-JSON and xBRL-CSV.
- The SEC itself points filers to Arelle for the Inline XBRL viewer, which lets a team test an iXBRL report before submission through EDGAR.
- Arelle does not draft documents, manage authors or submit filings, so it complements rather than replaces a reporting platform or agent.
- It needs Python 3.9 or higher, or a pre-built install, and support comes from the community.
- Choose it when you need a free, trusted validator before every submission.
Pros
- Free open-source XBRL processor under the Apache License 2.0
- certified by XBRL International as a Validating Processor
Cons
- No drafting, tagging or EDGAR submission workflow, so it cannot replace a filing platform
- setup needs Python skill or a pre-built install
How we chose
We chose tools that prepare, tag, validate or submit real SEC filings, and we checked prices on official vendor pages on 2026-11-12. We did not test any tool hands-on. Seven of the eight enterprise tools publish no list price, so we wrote quote only for those items rather than repeating third-party estimates. IRIS CARBON was the exception, with a $25,000 product price listed on its own site, and Arelle was the free open-source validator. We left out reading tools for investors, because this article is for preparers who must file.
Which tool fits your filing load and budget
| Filer type | First choice | Why it fits | Cost to confirm |
|---|---|---|---|
| Large public company, many authors | Workiva | Linked data, audit trails and ESG in one system | Written quote, modules and user count |
| Word and Excel team, small group | DFIN ActiveDisclosure | Familiar drafting with filing services behind it | Written quote, per-form or annual terms |
| Proxy heavy, equity data central | Certent Disclosure Management | Equity data feeds the proxy and the 10-K | Written quote, users and scope |
| IPO or complex deal, need experts | Toppan Merrill Bridge | Managed services plus Bridge software | Written quote, software versus service split |
| Fixed budget, want a published price | IRIS CARBON | $25,000 per year list price, unlimited pages and revisions | Confirm scope, taxonomies and support hours |
| Small team, want the filing handled | RDG Filings | ThunderDome plus a CPA filing team | Written quote for the flat rate |
| Tagging heavy, small XBRL team | Ez-XBRL Integix | AI tagging plus XOR review and validation | Written quote, filing types covered |
| Any filer, pre-submission check | Arelle | Free validator certified by XBRL International | $0, community support only |
Frequently asked questions
How much does SEC filing software cost?
Most enterprise SEC filing software is sold by quote, with no published list price. IRIS CARBON is the exception, with a $25,000 per year list price on its own site. Arelle is free and open source. Expect other vendors to price by users, modules, filing count and services, so get the quote in writing before you sign.
Which is the best SEC filing software for a small public company?
A small public company should start with DFIN ActiveDisclosure for familiar Word and Excel drafting, or with RDG Filings when it wants a filing team to handle the work. IRIS CARBON suits a small team that wants a fixed $25,000 annual fee. Add Arelle as a free pre-submission validator, because it checks the filing against EDGAR rules before you submit.
Which is the best SEC filing software for a large public company?
Workiva is the best fit for a large public company, because linked data, audit trails and ESG reporting sit in one system. Certent Disclosure Management is a strong second choice when equity data feeds the proxy statement, and Toppan Merrill Bridge suits an issuer that also wants managed filing services.
Can I file a 10-K with Arelle alone?
No, Arelle alone is not enough to file a 10-K. It validates, views and processes XBRL and iXBRL documents, and the SEC points filers to it for the Inline XBRL viewer, but it does not draft the narrative, manage authors or submit the filing to EDGAR. Use it as a free check before submission, and pair it with a filing platform or agent for drafting and submission.
What is the difference between XBRL and Inline XBRL?
XBRL tags financial facts in a separate machine-readable file, while Inline XBRL embeds those tags inside the human-readable HTML document that readers see. The SEC requires Inline XBRL for public company filings. Every tool here supports Inline XBRL, and Arelle can validate the result before submission.
How long do I have to file a 10-K?
The deadline depends on filer size. Large accelerated filers have 60 days after the fiscal year end, accelerated filers have 75 days, and non-accelerated filers have 90 days. A late number change that flows through every linked document is safer than a manual edit across a 10-K and a proxy in the final week.
Sources
- https://www.workiva.com/
- https://www.dfinsolutions.com/
- https://www.certent.com/
- https://www.toppanmerrill.com/
- https://www.iriscarbon.us/
- https://www.rdgfilings.com/
- https://www.ez-xbrl.com/
- https://www.ez-xbrl.com/product/integix/
- https://www.arelle.org/
Prices and features were read on each company’s own website in November 2026. They change often, so confirm the current offer on the official site before you sign up or buy.