Will Trump balance the budget?

Step 1: Understanding the resolution criteria The bet resolves YES if there is NO budget deficit in at least one fiscal year (2025, 2026, 2027, or 2028). It resolves NO if ALL four years have deficits.

Step 2: Assessing FY 2025 (already completed) FY 2025 ended September 30, 2025 with an official $1.8 trillion deficit (5.8% of GDP). This is finalized Treasury data. FY 2025 had a deficit.

Step 3: Assessing FY 2026 (in progress, 5 months complete)

• First 5 months (Oct 2025 - Feb 2026): Already borrowed $1.0 trillion
• CBO projects full-year deficit of $1.9 trillion
• To balance FY 2026, the remaining 7 months would need a $1.0 trillion SURPLUS—requiring dramatic spending cuts or revenue increases with zero precedent
• The One Big Beautiful Bill Act (OBBBA) structurally increased deficits by $4.7T over budget window, partially offset by $3.0T in tariff revenue
• FY 2026 will almost certainly have a deficit

Step 4: Assessing FY 2027-2028 outlook

• CBO projects deficits "structurally above 5.8% of GDP through 2028"
• With ~$33 trillion nominal GDP (2026), 5.8% = $1.9 trillion annual deficits
• Trump administration's own goal via Treasury Secretary Bessent's "3-3-3 plan" is to reduce deficit to 3% of GDP by 2028—NOT to balance it
• Even OMB's optimistic 2035 projection shows $944 billion deficit, never reaching balance
• Net interest costs exceeded $1 trillion in FY 2025 and are rising with elevated Fed rates (3.5-3.75%)

Step 5: Structural constraints

• Closing a $1.9 trillion annual deficit (~5.8% of GDP) in 2-3 years would require:
  • Spending cuts of 27% across the board, OR
  • Revenue increases of 38%, OR
  • Some combination
• No historical precedent exists for deficit reduction of this magnitude and speed
• The U.S. hasn't balanced a budget since FY 2001 (23 years ago)
• Recent policy (OBBBA tax cuts) moved in the OPPOSITE direction structurally

Step 6: Economic headwinds

• Iran war began Feb 28, 2026, pushing oil to $100/barrel (+40%)
• Inflationary pressures: Core PCE at 3.06%, Fed forecasting 2.7% for 2026
• Labor market weakening: Feb 2026 payrolls -92,000, unemployment 4.4%
• Recession risk increases probability of even larger deficits due to automatic stabilizers
• Fed holding rates elevated (3.5-3.75%), with 20% probability of HIKES, not cuts

Step 7: Political economy reality

• The administration's stated target is 3% deficit, not balance
• Congress passed OBBBA which added $4.7T to deficits
• No credible legislative proposals exist to eliminate $1.9T annual deficits
• Election cycle (2026 midterms, 2028 presidential) creates political constraints on austerity

Step 8: Base rate

• U.S. has balanced budget only 4 times in past 50 years (all 1998-2001 during dot-com boom)
• Zero historical precedents for moving from 5.8% deficit to balance in 2-3 years
• Base rate under these conditions: effectively 0%

Conclusion: FY 2025 already had a deficit (certain). FY 2026 is on track for $1.9T deficit with 5 months of $1.0T borrowing already booked (near-certain). CBO projects continued large deficits through 2028. The administration's own goal is 3% deficit, not balance. There is no plausible policy path, economic scenario, or historical precedent for achieving a balanced budget in any of these four years.

The only non-zero probability scenario is an extreme black swan (e.g., accounting gimmick, emergency revenue windfall from asset sales, hyperinflation destroying real deficit while nominal revenue surges). These are implausible enough to warrant ~0.1% probability.

My estimate: 0.1% (0.001) Market odds: 13.5% (0.135) for YES

Edge assessment: The market is significantly overpricing this outcome. At 13.5%, the market implies roughly 1-in-7 odds of budget balance occurring in at least one of these years. Given that FY 2025 is already finalized with a deficit, FY 2026 is nearly locked in with a deficit, and structural factors make 2027-2028 balance nearly impossible, the true probability is close to zero. There is strong value in betting NO.

Strong edge exists betting NO at current market odds of 86.5% (implied YES at 13.5%).

The market is significantly overpricing the probability of budget balance. My estimate of 0.1% (1-in-1000) versus market's 13.5% (1-in-7.4) represents a massive mispricing.

Why the edge exists:

1. Information clarity: FY 2025 is finalized with deficit (certain). FY 2026 is 5/12 complete with $1T borrowed (near-certain deficit). This eliminates 2 of 4 years with high confidence.

2. Structural impossibility: Closing $1.9T deficit in 2027 or 2028 would require unprecedented 27% spending cuts or 38% tax increases with zero legislative movement in that direction.

3. Administration contradiction: Trump's own Treasury Secretary targets 3% deficit, not balance. If the administration isn't even attempting balance, how can markets price 13.5% odds?

4. CBO credibility: Non-partisan CBO explicitly projects deficits "structurally above 5.8% GDP through 2028" - this is their core mandate and expertise.

5. Base rate: Zero historical precedents for this magnitude of deficit reduction in this timeframe.

Market inefficiency hypothesis:

• Retail bettors may be confusing "deficit reduction" with "balanced budget"
• 13.5% may reflect wishful thinking about Trump's business acumen or deal-making
• Small market size may allow mispricings to persist
• Availability bias: Recent news about tariff revenues may create illusion of path to balance

Risk to edge:

• Could be missing some technical budget mechanism or one-time revenue event
• But even accounting for unknown unknowns, 13.5% seems far too high

Recommendation: Strong bet NO (budget will NOT be balanced). Fair value is closer to 99.9% NO (0.1% YES) versus market's 86.5% NO (13.5% YES). This represents 13.4 percentage points of edge.