- Big 4 vs. Carta Fund Tax: The framework every fund manager should demand answers to
- How does your fund tax provider access your general ledger?
- When did your K-1s ship last year?
- Can your tax provider scale with your fund as it grows?
- What does your tax provider’s tech deliver?
- Are you paying Big 4 rates for work AI can perform?
- How many people touch your return?
- Can you see your return status in real time?
- Compare Big 4 vs. Carta Fund Tax
- Outgrown your current provider? Switch to Carta Fund Tax
Tax-season stressors like late K-1s, reconciliation loops, and endless emails are typical in Big 4 engagements—and if you have complex fund structures, costs can quickly multiply. For a long time, it was the only way, but now there’s a better way.
Carta Fund Tax provides efficient K-1 delivery and tax return preparation, overcoming common reasons for lag and lack of visibility with unified fund accounting and automated tax workflows. Traditional Big 4 models can’t keep up.
Fund managers can learn the differences by asking these seven questions. They’re the same ones Carta CPAs ask when new funds come to Carta from other administration providers. They reveal more about a provider’s infrastructure than any sales deck.
How does your fund tax provider access your general ledger?
With Big 4 engagements, fund managers act as the bridge for accounting information. Compiling data can be arduous—and it’s just the start. You still have to dedicate time to managing their questions. Investigations and messaging efforts add up, making tax season unnecessarily stressful.
Carta Fund Tax eases this mental load by running tax workflows on the same data layer as Carta Fund Administration. Your general ledger is the Carta tax team’s direct source of information, so reconciliation is fast and straightforward.
Carta autonomously reviews information, fixes discrepancies and gaps, and generates your filings for CPA review, providing you with timely K-1 delivery without the traditional back-and-forth.
When did your K-1s ship last year?
The K-1 deadline is March 15, but the industry norm has become September, requiring fund managers and their LPs to manage additional filings for extensions.
Big 4 tax prep providers often set the market’s operating rhythm, but there’s a better way.
Carta leads the industry in fund administration, providing fund tax solutions that compress prep timelines, enabling you to ship more K-1s earlier.
By mid-January 2026, Carta delivered K-1s to the majority of customers with a total of 32,300 K-1s delivered by March 15 and 55,000 K-1s delivered by mid-May, a 2x increase over the prior year.
Carta also provides Express K-1s, early tax estimates so LPs can file without waiting for final K-1s.
Can your tax provider scale with your fund as it grows?
Some Big 4 firms have the depth for complex fund structures, but with each new milestone you reach, they add friction, changing the cost and engagement models.
More people get involved, back-and-forth accumulates at each layer, and increasing costs change your financial outcomes.
Carta easily handles all levels of complexity without changing the engagement mid-stream. That means you can grow into multiple funds and continuation vehicles, add SPVs, and partner with international LPs without changing your engagement mid-stream.
Your fund's complexity shouldn't determine your provider's responsiveness.
What does your tax provider’s tech deliver?
Big 4 firms make AI announcements. Carta has fully operational AI driving measurable improvements for fund managers.
Carta reviews, flags, and fixes data. Carta automatically reviews your information and compares prior to current years. It flags missing or incorrect data, such as LP names, entity structures, and transaction mismatches, and proposes fixes so tax preparers know exactly where to start.
Carta generates K-1s and 1065s. Carta compresses the traditional tax-prep process to quickly create K-1s and 1065s. Firms avoid manual back-and-forth because Carta pulls your integrated financial data from Carta Fund ERP, embedding clear traceability to support tax preparer review.
A Carta tax manager reviews and signs your filings. Carta has fund accountants who verify filings are accurate before signing. They skip lengthy manual reconciliation and data entry steps because your fund and tax information already live on the same data layer. Instead, tax preparers focus their expert judgment on resolving exceptions and reviewing filings to finalize delivery.
This is how Carta delivers K-1s on time without extra stress and second-guessing for fund managers.
Are you paying Big 4 rates for work AI can perform?
Big 4 fund tax prep pricing has historically reflected CPA talent and depth on complex structures. That model made sense when CPAs were a key resource at every stage, but AI can handle data extraction, workbook assembly, and quality assurance now.
That means tax preparer time shifts to review, judgment, and expertise, providing greater value for fund managers.
It also means the cost of the engagement shifts, because AI can produce filings more efficiently than layers of human output.
How many people touch your return?
A typical Big 4 return moves through a partner, manager, senior associate, and other staff with each handling different sections. Each individual knows a specific set of information about your fund's structure, LP roster, and history, but handoffs can lead to mistakes, misinterpretations, and missing information.
Carta provides support on fund accounting and tax return preparation. Because fund administration and tax run on the same platform, there are no handoffs between providers and no data to reinterpret between systems. You can also book one-on-one sessions with tax experts on demand throughout the season.
Can you see your return status in real time?
With some Big 4 providers, fund managers can only get status updates by asking via email or phone call. The Carta Tax Dashboard provides real-time information to fund managers, showing where all returns across all funds stand, so when an LP has questions, the answer is easy to find right away.
Compare Big 4 vs. Carta Fund Tax
Big 4 | Carta | |
Data integration | Manual exports, fund managers bridge accounting and tax prep | General ledger and tax data live on the same platform |
K-1 delivery | Up to September or later | By March 15 or earlier for the majority of customers |
Complexity | Capable, but engagement friction scales with complexity | All complexity tiers fall under one engagement model |
Technology | AI-related announcements | AI is operational and compresses traditional tax-prep processes |
Cost model | CPA rates apply across automatable and judgment-intensive work | AI handles preparation, so tax preparer time goes toward review and sign-off |
Engagement model | Multiple contacts across a layered engagement | One point of contact helps with centralized fund accounting and tax prep |
Visibility | Status available on request | Self-serve status checks with real-time information |
Outgrown your current provider? Switch to Carta Fund Tax
If you're already on Carta, it’s easy to switch from a Big 4 tax provider to Carta Fund Tax. Carta’s centralized workflows and AI-accelerated tax preparation provide faster K-1 delivery backed by tax and fund accounting experts.
For the 2025 tax season, Carta served 460 firms, delivering 55,000 K-1s, across funds of all levels of complexity. If you’ve outgrown the legacy solutions of Big 4 firms, talk to your Carta rep about adding Fund Tax.
DISCLOSURE: This communication is on behalf of eShares, Inc. dba Carta, Inc. ("Carta"). This communication is for informational purposes only, and contains general information only. Carta is not, by means of this communication, rendering accounting, business, financial, investment, legal, tax, or other professional advice or services. This publication is not a substitute for such professional advice or services nor should it be used as a basis for any decision or action that may affect your business or interests. Before making any decision or taking any action that may affect your business or interests, you should consult a qualified professional advisor. This communication is not intended as a recommendation, offer or solicitation for the purchase or sale of any security. Carta does not assume any liability for reliance on the information provided herein. ©2026 Carta. All rights reserved. Reproduction prohibited.
