Work · alternatives · 2026

24 alternatives to Founder's Guide to Corporate Taxes

Everything you need to know about your startup tax deadlines

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Founder's Guide to Corporate Taxes launched in 2022; newer entries below may have overtaken it.

1
$1 Delaware Franchise Tax by Fondo▲230
Let Fondo file your Delaware Franchise Tax for $1
2023 · fondo.com · its alternatives →
2
Firstbase Tax Filing▲147
Let us handle your taxes so you can focus on building
2024 · its alternatives →
3
Tax Extension & Startup Tax Plan▲176
Your startup taxes on autopilot
2024 · fondo.com · its alternatives →
4
Tax Extension Filer by Fondo▲99
Extend your startup’s corporate tax deadline (7/15) to 10/15
2020 · fondo.com · its alternatives →
5
Stripe Atlas Taxes▲510
Help file your business taxes
2018 · stripe.com · its alternatives →
6
ComplYant▲64
Entrepreneurs will never miss a tax deadline again
2021 · complyant.co · its alternatives →
7
Incorporate your startup online with YC's forms (built by two lawyers)▲424
Most popular online service for startup legal paperwork, including Delaware C corporation incorporation. Recommended by the most startup attorneys. Designed exclusively for startups, as opposed to regular small businesses. Run by two startup attorneys obsessed with helping founders avoid problems wi
2013 · clerky.com · its alternatives →
8
Inkle's Free Form 7004▲92
Extend your US startup's IRS tax deadline by 6 months
2023 · inkle.ai · its alternatives →
9
neo.tax 2.0▲198
10 minutes could save your startup 10% or more on payroll
2021 · neo.tax · its alternatives →
10
Jupid▲659
File your taxes with Claude Code
Mar 2026 · jupid.com · its alternatives →
11
MainStreet▲540
Founders: You're owed $50K. Get it back in 20 minutes 🤝
2020 · mainstreet.com · its alternatives →
12
Pilot Tax▲121
Tax prep service for startups
2019 · pilot.com · its alternatives →
13
LLC Toolkit▲143
Register and manage your Delaware LLC with no hassle.
2021 · its alternatives →
14
doola Company Formation API▲147
Create an LLC, C Corp or DAO LLC from the command line
2022 · doola.com · its alternatives →
15
Finance for Founders▲273
Startup finances 101 - videos, templates & tools for free
2022 · usecaribou.com · its alternatives →
16
Firstbase Agent ▲165
Ditch the lawyers, save hours on your compliance filings
2023 · firstbase.io · its alternatives →
17
TaxHero AI▲21
The simplest ever AI-driven tax app for early-stage startups
2025 · its alternatives →
18
FounderTax▲2
C-Corp compliance calendar reminders. No more $25k penalties
Feb 2026 · foundertax.co · its alternatives →
19
neo.tax▲161
automated R&D tax credits for startups = extra month of burn
2020 · neo.tax · its alternatives →
20
Uprise Best Stock Options Tax Calculator▲92
Calc your startup stock option taxes (+state & AMT) for free
2023 · uprise.us · its alternatives →
21
GetDynasty▲109
Exit tax-free using Trusts. For startup founders.
May 2026 · getdynasty.com · its alternatives →
22
$1 Delaware Franchise Tax▲3
Let Fondo file your Delaware Franchise Tax for $1
2023 · fondo.com · its alternatives →
23
MainStreet: 1 Min Tax Extension▲94
Extend taxes & gain up to $250K in startup tax credits
2020 · mainstreet.com · its alternatives →
24
Búho Contable▲81
Tax, bookkeeping, credit accountant for LATAM
2021 · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →