Will the national debt hit $40 trillion during the Trump Administration
Leader sits at 97% across 6 bound outcomes, runner-up at 96%. This is a winner-take-all market — the headline is the leader’s price, not an arithmetic mean.
Leader probability
$40 trillion
Outcomes
6
winner-take-all
Runner-up
96¢
$42.5 trillion
Spread
1pp
contested
24h volume
$11
thin orderbook
Closes
Mar 31, 2029
969 days
Venue
Kalshi
6 bound
30-day trend
Bracket family
How the bracket ladder is priced.
Each row is one outcome on the venue. Sorted by 24h volume — the heaviest book is at the top.
Cluster 1
Will the national debt hit $
Will the national debt hit $45 trillion during the Trump Administration?: $45 trillion
KXDEBTGROWTH-28DEC31-45
Will the national debt hit $47.5 trillion during the Trump Administration?: $47.5 trillion
KXDEBTGROWTH-28DEC31-47.5
Will the national debt hit $52.5 trillion during the Trump Administration?: $52.5 trillion
KXDEBTGROWTH-28DEC31-52.5
Will the national debt hit $42.5 trillion during the Trump Administration?: $42.5 trillion
KXDEBTGROWTH-28DEC31-42.5
Will the national debt hit $40 trillion during the Trump Administration?: $40 trillion
KXDEBTGROWTH-28DEC31-40
Will the national debt hit $50 trillion during the Trump Administration?: $50 trillion
KXDEBTGROWTH-28DEC31-50
Analysis
Markets are pricing a 97% probability that the national debt will reach $40 trillion before the Trump Administration ends, compared to 78% for $45 trillion and 33% for $50 trillion. The national debt currently stands near $36 trillion and grows through a combination of mandatory spending, discretionary appropriations, and interest payments on existing debt. The probability reflects expectations about fiscal deficits over the remaining administration period. Primary drivers include the trajectory of federal spending relative to revenue, economic growth rates affecting tax collections, and interest rates determining debt service costs. Resolution depends on Treasury Department debt-level data releases and Congressional appropriations decisions in the remaining months of the term.
- ›Current national debt is approximately $36 trillion; reaching $40 trillion requires approximately $4 trillion in additional borrowing
- ›Annual federal deficits typically range from $1-2 trillion; cumulative deficits through administration end determine debt trajectory
- ›Interest rates and economic growth rates directly affect both debt service costs and revenue collections, creating uncertainty in deficit projections
- ›Remaining time in administration limits the window for debt accumulation; shorter timeframe makes higher thresholds ($45T, $50T) progressively less likely
- ›Monthly Treasury debt data releases provide concrete measurements to track progress toward the $40 trillion threshold
What moved the line
- Jul 31$47.5 trillion↑24pp34→58¢ · Kalshi
- Jul 29$47.5 trillion↓20pp47→27¢ · Kalshi
- Jul 31$50 trillion↑14pp18→32¢ · Kalshi
- Jul 30$47.5 trillion↑7pp27→34¢ · Kalshi
- Jul 31$52.5 trillion↑5pp10→15¢ · Kalshi
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These markets stopped trading. Last odds and any captured outcome are shown above — full settlement detail lives at the venue.
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How we compute these odds
SimpleFunctions aggregates live prediction-market contracts from Kalshi and Polymarket. Each slug groups contracts that resolve on the same underlying event, identified by venue event_id.
For binary slugs, the headline probability is the liquidity-weighted mid-price across all bound contracts. For multi-outcome slugs (e.g. elections with 3+ candidates), the headline is the leader’s price; we never arithmetically average disjoint outcomes — that would produce a number with no real-world meaning.
Snapshots refresh every 5 minutes during market hours; daily aggregates are computed at 04:00 UTC. The 30-day sparkline is drawn from per-ticker daily means stored in market_indicator_daily; 24h delta and movement events are derived from the same source.
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