MIAIX Fees and Costs — MFS Inflation-Adjusted Bond Fund, Class I
Data updated: 2026-09-24
The net expense ratio is 0.50%: a 0.45% management fee plus 0.13% other expenses, less a 0.08% fee waiver. There are no sales loads or redemption fees. In fiscal 2025 the fund paid $53K in broker commissions, 0.0035% of average net assets, and portfolio turnover was 38%.
MIAIX Fees and Expenses
Annual operating expenses and sales charges of MIAIX. Prospectus, as of October 31, 2025.
| Annual operating expenses | |
|---|---|
| Management fee | 0.45% |
| 12b-1 fee | 0.00% |
| Other expenses | 0.13% |
| Gross expense ratio | 0.58% |
| Fee waiver | −0.08% |
| Net expense ratio | 0.50% |
| Sales charges | |
|---|---|
| Max front load | 0.00% |
| Max deferred load | 0.00% |
| Redemption fee | — |
| Expense limitation in place (N-CEN) | Yes |
| Fees waived or reduced during the year | Yes |
| Waived fees subject to recoupment | No |
MIAIX Costs Over Time
On $10,000 invested in MIAIX, assuming 5% a year before costs, total costs come to $318 over 5 years, cutting the return by 0.53% a year. Illustration, not a forecast: it assumes today's net expense ratio throughout (a fee waiver may end).
| $10,000 invested | Sell after 1 year | Sell after 3 years | Sell after 5 years |
|---|---|---|---|
| Value before costs | $10,500 | $11,576 | $12,763 |
| Fund expenses (net expense ratio 0.50%) | $52 | $165 | $287 |
| Trading costs (broker commissions) | $0 | $1 | $2 |
| Lost growth on money paid in costs | $0 | $8 | $29 |
| Total costs | $53 | $174 | $318 |
| Value after costs | $10,447 | $11,402 | $12,445 |
| Impact on return, per year | 0.53% | 0.53% | 0.53% |
MIAIX Trading Costs
Brokerage costs reported on SEC Form N-CEN for the fiscal year ending October 31, 2025.
- Explicit cost rate (commissions ÷ average net assets): 0.0035%
- Total broker commissions: $53K
- Bought from dealers (principal trades, not a cost): $2.0B
- Portfolio turnover (prospectus): 38%
- Securities lending: none during the year
MIAIX Agency Brokers
Commissions paid.
| Broker | Amount | Share |
|---|---|---|
| BofA Securities, Inc. | $53K | 100.00% |
MIAIX Dealer Counterparties
Securities bought directly from dealers (principal trades).
| Broker | Amount | Share |
|---|---|---|
| BofA Securities, Inc. | $957.7M | 50.71% |
| BMO Capital Markets Corp. | $226.8M | 12.01% |
| BNP Paribas Securities Corp. | $150.4M | 7.97% |
| Morgan Stanley & Co. LLC | $145.9M | 7.72% |
| Citigroup Global Markets Inc. | $126.8M | 6.72% |
| J.P. Morgan Securities LLC | $114.8M | 6.08% |
| BNY Capital Markets, LLC | $62.4M | 3.31% |
| Wells Fargo Securities, LLC | $43.0M | 2.28% |
| Nomura Securities International, Inc. | $34.9M | 1.85% |
| Barclays Capital Inc. | $25.7M | 1.36% |
MFS Inflation-Adjusted Bond Fund Share Classes
Net expense ratio and maximum front-end load of each share class, cheapest first.
| Ticker | Class | Net expense ratio | Front load |
|---|---|---|---|
| MIAKX | Class R6 | 0.41% | none |
| MIAIX | Class I | 0.50% | none |
| MIAJX | Class R4 | 0.50% | none |
| MIAAX | Class A | 0.65% | 4.25% |
| MIAHX | Class R3 | 0.75% | none |
| MIATX | Class R2 | 1.00% | none |
| MIABX | Class B | 1.40% | none |
| MIACX | Class C | 1.50% | none |
| MIALX | Class R1 | 1.50% | none |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.