• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia

Trendingnow

1

MacKenzie Scott alone accounted for one-third of America's $19.2 billion in megagifts last year

2

Philanthropy leader at Warren Buffett and Bill Gates’ Giving Pledge says children of billionaires are pushing them to give their wealth away faster

3

Elon Musk on MacKenzie Scott giving away $26 billion of her fortune: 'Sadly,' it makes the world a worse place

1

MacKenzie Scott alone accounted for one-third of America's $19.2 billion in megagifts last year

2

Philanthropy leader at Warren Buffett and Bill Gates’ Giving Pledge says children of billionaires are pushing them to give their wealth away faster

3

Elon Musk on MacKenzie Scott giving away $26 billion of her fortune: 'Sadly,' it makes the world a worse place
FinanceInvestors Guide

Pfizer-Allergan could be a super inversion deal

By
Stephen Gandel
Stephen Gandel
Down Arrow Button Icon
By
Stephen Gandel
Stephen Gandel
Down Arrow Button Icon
October 29, 2015, 3:36 PM ET
Pfizer And AstraZeneca's Billion Dollar Battle
Packs of 0.2ml syringes containing Pfizer's Fragman medication, produced by Pfizer Inc., are arranged for a photograph in London, U.K., on Friday, May 2, 2014. AstraZeneca Plc rejected Pfizer Inc.'s sweetened takeover proposal, saying the 63.1 billion-pound ($106.5 billion) offer fails to recognize the value of the promising experimental medicines under development by the U.K.'s second-biggest drugmaker. Photographer: Chris Ratcliffe/Bloomberg via Getty ImagesPhotograph by Chris Ratcliffe — Bloomberg via Getty Images
Add Fortune on Google for similar content.

Pfizer might be forced to supersize its deal for Allergan, thanks to the U.S. Treasury.

Last September, the department passed rules that were supposed to stop the steady stream of inversions, deals in which U.S. companies buy a foreign company in order to incorporate overseas and save on taxes. Some have noted that the rule changes don’t seem to have stopped the tax deals. There have been 54 completed or announced inversions since last fall, according to Dealogic.

Allergan (AGN) is based in Dublin, where corporate taxes are much lower than the U.S. Pfizer has shown interest in inverting in the past. So, the proposed Pfizer deal seems to be more evidence that Treasury’s changes have had little effect.

Not quite.

In the past, the inversion threshold was 20%. Meaning that 20% of the new company had to be owned by a foreign entity in order to take full tax advantage of moving overseas. But the Treasury rule changes make it harder for U.S. companies to shift domestic earnings overseas at the 20% level. What’s more, companies can no longer use foreign cash tax-free to fund inversion deals if the deal ends up with just 20% foreign ownership.

But the changes don’t eliminate the benefits of tax inversions. They just reset the threshold to 40%. That means Pfizer might actually be willing to pay more for the Allergan deal than investors currently think.

Pfizer’s market cap is roughly $220 billion. Shares of Allergan are up 19% on Thursday on rumors of the deal. That gives the company a market cap of $120 billion. For Pfizer to meet the 40% threshold, it would have to pay at least $147 billion for Allergan, or $27 billion more than what the market is currently guessing.

That might actually make sense. Pfizer currently has about $70 billion in cash overseas. If it were to repatriate that at the corporate 35% tax rate, then it would have to pay $24.5 billion in taxes.

Pfizer might even be willing to pay more for Allergan. As part of the rule changes, Treasury factors into the deal any spin-offs or special dividends that a company has done in the past three years. Pfizer spun-off its animal health business in mid-2013 for $14 billion. That would bring the price that Pfizer would have to pay for Allergan up to $156 billion. Then again, Pfizer could also just wait eight months to complete the deal and not have to pay any spin-off-related premium.

Treasury’s rules may not be slowing inversions. But they might be getting companies to pay more than they used to.

About the Author
By Stephen Gandel
See full bioRight Arrow Button Icon
Add Fortune on Google for similar content.

Latest in Finance

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Finance

mr
Commentary250 Years of Innovation
America needs 3.8 million manufacturing workers. This CEO has a blueprint to find them
By Mark RayfieldJuly 1, 2026
1 hour ago
OCBC rolls out its ‘avatar banking’ platform with ‘Wendy’ and ‘Wayne,’ two virtual financial advisors, as banks integrate AI into wealth management
AsiaSingapore
OCBC rolls out its ‘avatar banking’ platform with ‘Wendy’ and ‘Wayne,’ two virtual financial advisors, as banks integrate AI into wealth management
By Angelica AngJuly 1, 2026
1 hour ago
Top CD rates today, July 1, 2026: Lock in up to up to 4.40%
Personal FinanceCertificates of Deposit (CDs)
Top CD rates today, July 1, 2026: Lock in up to up to 4.40%
By Glen Luke FlanaganJuly 1, 2026
2 hours ago
Today’s top high-yield savings rates: Up to 5.00% on July 1, 2026
Personal FinanceSavings accounts
Today’s top high-yield savings rates: Up to 5.00% on July 1, 2026
By Glen Luke FlanaganJuly 1, 2026
2 hours ago
Photo: Rocks balancing on driftwood, sea in background.
AIMarkets
Leveraged stock bets are ‘very concentrated in the AI ecosystem,’ Goldman Sachs warns
By Jim EdwardsJuly 1, 2026
2 hours ago
Current refi mortgage rates report for July 1, 2026
Personal FinanceReal Estate
Current refi mortgage rates report for July 1, 2026
By Glen Luke FlanaganJuly 1, 2026
5 hours ago

Most Popular

MacKenzie Scott alone accounted for one-third of America's $19.2 billion in megagifts last year
Success
MacKenzie Scott alone accounted for one-third of America's $19.2 billion in megagifts last year
By Sydney LakeJune 25, 2026
6 days ago
Philanthropy leader at Warren Buffett and Bill Gates’ Giving Pledge says children of billionaires are pushing them to give their wealth away faster
Success
Philanthropy leader at Warren Buffett and Bill Gates’ Giving Pledge says children of billionaires are pushing them to give their wealth away faster
By Preston ForeJune 27, 2026
4 days ago
Elon Musk on MacKenzie Scott giving away $26 billion of her fortune: 'Sadly,' it makes the world a worse place
Success
Elon Musk on MacKenzie Scott giving away $26 billion of her fortune: 'Sadly,' it makes the world a worse place
By Sydney LakeJune 29, 2026
2 days ago
'Humanity has chosen to become idiots': This Brown professor switched to take-home exams after a mass shooting and discovered mass cheating
AI
'Humanity has chosen to become idiots': This Brown professor switched to take-home exams after a mass shooting and discovered mass cheating
By Catherina GioinoJune 29, 2026
2 days ago
The U.S. Army is opening military bases to private billions — here's why that changes everything for the next 250 years
Commentary
The U.S. Army is opening military bases to private billions — here's why that changes everything for the next 250 years
By Marc AndersenJune 30, 2026
1 day ago
The retired college professor fighting a $313 trespassing ticket in Wisconsin thinks he's part of a national struggle
Environment
The retired college professor fighting a $313 trespassing ticket in Wisconsin thinks he's part of a national struggle
By Catherina GioinoJune 28, 2026
3 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.