| Abbreviation | Definition |
|---|---|
| MF | Marginal Fine |
| MFRT | Motor Fuel Receipts Tax |
| MFSSM | Married Filing Separate on the Same Return |
| MFT | Master File Tax |
| MFTA | Maximum Funded Tax Advantaged |
| MFTC | Minimum Family Tax Credit |
| MIHTC | Middle Income Housing Tax Credit |
| MLR | Monthly Line Rent |
| MLT | Master of Law and Taxation |
| MLTT | Municipal Land Transfer Tax |
| MLTT | Municiple Land Transfer Tax |
| MM | Multi Million |
| MMFT | Municipal Motor Fuel Tax |
| MPST | Municipal Public Service Tax |
| MRDT | Municipal and Regional District Tax |
| MRDT | Municipal Regional District Tax |
| MRRT | Mineral Resource Rent Tax |
| MRRT | Minerals Resource Rent Tax |
| MRT | Mortgage Registry Tax |
| MSTU | Municipal Service Taxing Units |