Celtics Reset 5-Year Cap Research Memo
Date: 2026-05-17 Status: pre-build memo. Multi-year contracts verified against cached Basketball-Reference HTML.
1. Salary sources used
All multi-year contracts extracted from cached primary-source HTML in data/raw/:
- Boston:
data/raw/celtics_bbref_2026.txt— full multi-year Boston payroll table from Basketball-Reference.com/contracts/BOS.html (fetched 2026-05-17). - Utah:
data/raw/bbr_uta_contracts.html— full multi-year Utah payroll table from Basketball-Reference.com/contracts/UTA.html. - Minnesota:
data/raw/min_cap_2026_05_17/bbr_MIN.html— full multi-year Minnesota payroll table. - CBA mechanics:
cba-knowledge/sources/cba-2023-changes.md, project-local CBA full text.
Cap-threshold projections beyond 2026-27 use the CBA-allowed 10% annual cap-growth ceiling — clearly labeled as projection.
2. Verified salary years
Boston (from BBR cache, fully verified)
| Player | 2025-26 | 2026-27 | 2027-28 | 2028-29 | 2029-30 |
|---|---|---|---|---|---|
| Jayson Tatum | $54,126,450 | $58,456,566 | $62,786,682 | $67,116,798 | $71,446,914 (PO) |
| Jaylen Brown | $53,142,264 | $57,078,728 | $61,015,192 | $64,951,656 | — (ends) |
| Derrick White | $28,100,000 | $30,348,000 | $32,596,000 | $34,844,000 (PO) | — |
| Sam Hauser | $10,044,644 | $10,848,215 | $11,651,785 | $12,455,356 | — |
| Payton Pritchard | $7,232,143 | $7,767,857 | $8,303,571 | — | — |
| Hugo Gonzalez | $2,783,880 | $2,923,560 | $3,062,640 (TO) | $5,528,065 (TO) | — |
| Baylor Scheierman | $2,619,000 | $2,744,040 | $4,952,993 (TO) | — | — |
| Luka Garza | $2,461,463 | $2,801,346 | — | — | — |
| Neemias Queta | $2,349,578 | $2,667,944 (partial) | — | — | — |
| Jordan Walsh | $2,221,677 | $2,406,205 (TO) | — | — | — |
| Amari Williams | $490,128 | $2,150,917 | $2,641,045 | — | — |
| Dalano Banton | $131,970 | $131,970 | — | — | — |
Boston ends with Tatum being the only guaranteed contract in 2029-30 ($71.4M player option). Brown's deal ends after 2028-29 (year 5 of 5y/$304M supermax signed 7/26/2023). White has a player option in 2028-29.
Utah (from BBR cache)
- Markkanen (4y/$196M signed 8/7/2024, no PO/TO):
- 2025-26: $46,394,100
- 2026-27: $46,113,154
- 2027-28: $49,824,681
- 2028-29: $53,536,209
- 2029-30: — (ends)
- Ace Bailey (4y rookie scale, TOs 2027-28 and 2028-29):
- 2025-26: $9,069,840
- 2026-27: $9,523,080
- 2027-28: $9,976,560 (TO)
- 2028-29: $12,640,302 (TO)
Minnesota (from BBR cache)
- Naz Reid (5y/$125M signed 7/14/2025, PO 2029-30):
- 2025-26: $21,551,724
- 2026-27: $23,275,862
- 2027-28: $25,000,000
- 2028-29: $26,724,138
- 2029-30: $28,448,276 (PO)
3. Estimated salary years
The following salaries are projections, not verified primary-source values:
2026 #2 pick rookie scale (Boston post-trade)
Year 1 calibrated to 2025 #2 (Harper $12.37M Y1). Year 1 of 2026: ~$12,990,000. Standard rookie-scale ladder: Y1 base, Y2 +5%, Y3 +5%, Y4 +25-26%.
| Year | Salary | Status |
|---|---|---|
| 2026-27 | $12,990,000 | rookie scale Y1 |
| 2027-28 | $13,639,500 | Y2 +5% (estimate) |
| 2028-29 | $14,321,475 | Y3 +5% (TO if Boston exercises) |
| 2029-30 | $17,901,844 | Y4 +25% (TO if Boston exercises) |
Brown extension after 2028-29
Brown's current 5y/$304M deal ends after 2028-29. He'll be 32. Likely re-signs at Bird max — modeled at ~$67M for 2029-30 (35% max, 8% raises). Heavily contingent.
Ace Bailey team options
TOs in 2027-28 ($9.98M) and 2028-29 ($12.64M) are exercised by holding team. Modeled as exercised by Boston in reset scenarios.
Markkanen 2029-30+
Contract ends after 2028-29. Modeled as departing/re-signing at market — value uncertain. Not included in 5-year totals unless re-signed (which Boston would model separately).
Minimum-salary roster filler
Each year requires 14+ roster spots. Filler estimated at $2.4M/spot × number of open spots after main contracts.
4. Cap / apron / tax projections 2026-27 through 2030-31
Verified
- 2025-26: cap $154,647,000; tax ~$187,895,000; first apron ~$195,945,000; second apron ~$207,824,000. (Spotrac, NBA.com).
- 2026-27: cap $165,000,000; tax ~$201,000,000; first apron $209,000,000; second apron $222,000,000. (Spotrac apron pages).
Projected (10% cap growth ceiling per CBA)
| Season | Cap | Tax | First apron | Second apron |
|---|---|---|---|---|
| 2027-28 | $181,500,000 | $221,100,000 | $229,900,000 | $244,200,000 |
| 2028-29 | $199,650,000 | $243,210,000 | $252,890,000 | $268,620,000 |
| 2029-30 | $219,615,000 | $267,531,000 | $278,179,000 | $295,482,000 |
| 2030-31 | $241,576,500 | $294,284,100 | $305,996,900 | $325,030,200 |
All 2027-28 onward projections assume the CBA-allowed maximum 10% annual cap growth, which has been the effective rate since the new media deal. Actual numbers may be lower in any given year; that would compress apron headroom further than these projections show.
5. CBA rules that matter most
- Salary matching (verified): outgoing > $29M, below first apron → max incoming = 125% + $250K. Outgoing $7.5M-$29M → outgoing + $7.5M + $250K. At first apron: 100%. At second apron: 100% + no aggregation.
- Hard cap triggers: receiving via S&T, using 125% expansion (incoming > outgoing), using BAE or Taxpayer MLE → hard-capped at first apron for the cap year.
- Pick rights vs signed rookie: unsigned pick = $0 matching salary; signed rookie counts at face.
- Second apron restrictions: no aggregation, no S&T, no cash, taxpayer MLE only (which itself hard-caps at second apron).
- Frozen-pick rule: second apron in 2 of any 4 consecutive seasons freezes a future first-round pick 7 drafts out. Boston was second apron in 2024-25 only — not currently at risk.
6. Hard-cap triggers in the trade year (2026-27)
For the three-team reset (Tatum + White out, Lauri + Naz + Ace + #2 in):
- Pick-rights mode (A1): Boston incoming $78.91M < outgoing $88.80M → no expansion → no hard cap.
- Signed-#2 mode (B1): Boston incoming $91.90M > outgoing $88.80M → expansion → first-apron hard cap at $209M. Post-trade $190.83M, $18.17M cushion.
For the two-team Utah reset (Tatum out, Lauri + Ace + #2 in):
- Pick-rights mode: Boston incoming $55.63M < outgoing $58.46M → no expansion → no hard cap.
- Signed-#2 mode: Boston incoming $68.62M > outgoing $58.46M → expansion → hard cap. Post-trade $197.90M, $11.10M cushion.
7. Does pick-rights vs signed-pick timing matter after year one?
No. Once the #2 pick is signed and on Boston's roster, it counts as full salary every year regardless of which mode the trade executed in. The pick-rights vs signed-pick distinction only matters for the matching math at the moment of the trade.
For year 2 (2027-28) onward, the new Boston rookie is on his rookie-scale ladder. The trade-execution mode does not affect downstream years.
8. Assumptions about options, rookie-scale raises, minimums, roster charges
- Tatum 2029-30 PO: modeled as exercised (he's making $71.4M, will exercise unless extends).
- White 2028-29 PO: modeled as exercised (status-quo scenario only; he's traded out in reset scenarios).
- Brown post-2028-29: modeled as extending at Bird max (~$67M Y1 in 2029-30) in status-quo; not modeled in reset scenarios since reset focus is on what Boston has on books.
- Markkanen post-2028-29: modeled as UFA (max cap hold ~$79M); not extending in 5-year model.
- Naz Reid 2029-30 PO: modeled as opted-in (most likely on $28.4M as a max-tier big).
- Ace Bailey TOs (2027-28, 2028-29): modeled as exercised by Boston (cheap rookie scale).
- #2 pick TOs (2028-29, 2029-30): modeled as exercised.
- Hugo Gonzalez / Scheierman TOs: modeled as exercised by Boston (cheap rookie scale).
- Minimum filler: estimated at $2.5M per open roster spot. Boston needs to fill to 14 standard contracts each year. Filler grows ~5%/yr with cap.
- Roster size: 14 standard + 3 two-way assumed in all scenarios.
- Cap holds for UFAs: when Brown becomes UFA after 2028-29, his cap hold becomes ~$73M (35% × cap) until renounced or re-signed. Modeled as re-signed in status-quo; renounced in reset scenarios.
9. What might go wrong in this analysis
- 2027-28 onward cap is projected, not announced. Actual cap could be lower if the league misses revenue projections. That would compress all apron headroom shown.
- Brown's post-2028-29 extension is speculative. He could be traded, extended early, or re-sign at a different price.
- The 2026 #2 pick rookie-scale dollar is an estimate ($12.99M Y1). Spotrac chart was JS-rendered and not directly retrievable.
- Player options are assumed exercised based on rational economics. A surprise opt-out (rare at these dollar levels) changes the picture.
- Filler estimates use minimum salary. If Boston signs via the Taxpayer MLE or Non-Taxpayer MLE, the dollar value and hard-cap implications change.
10. Heading into modeling
Five scenarios:
- Scenario 0: Status quo (no Tatum trade).
- Scenario 1: Three-team reset, pick-rights execution.
- Scenario 2: Three-team reset, signed-#2 execution.
- Scenario 3: Two-team Utah reset.
- Scenario 4: Lauri + Kessler + #2 reset (comparison).
Each scenario projects 2026-27 through 2030-31 with: cap usage, tax/apron position, hard-cap triggers, and roster-flexibility flags.