| Term | Definition / Meaning / Stand for |
| RAC |
Real Asset Calculation (tax-related) |
| RAC |
Real Asset Credit (tax-related) |
| RFC |
Real Financial Credit |
| RIP |
Real Investment Property (tax-related) |
| RLE |
Real Life Estate (tax-related) |
| RLC |
Real Loan Credit (tax-related) |
| RMT |
Real Municipal Tax |
| RPC |
Real Property Credit |
| RPTD |
Real Property Tax Deduction |
| RPTL |
Real Property Tax Liability |
| RPT |
Real Property Tax |
| RPTC |
Real Property Transfer Credit |
| RTA |
Real Tax Adjustment |
| RTAF |
Real Tax Allowance Fund |
| RTC |
Real Transfer Credit |
| RWT |
Real Wealth Tax |
| RLIC |
Real-Life Insurance Credit |
| RFA |
Refund Adjustment Account (tax-related) |
| RFCI |
Refundable Childcare Incentive |
| RCI |
Refundable Childcare Income |
| RFA |
Refundable Federal Allowance (tax-related) |
| RFL |
Refundable Fuel Levy |
| RNR |
Refundable Net Revenue (tax-related) |
| RSI |
Refundable Sales Income |
| RTC |
Refundable Tax Credit |
| RCT |
Regional Corporate Tax |
| RITA |
Regional Income Tax Agency |
| RMTC |
Regional Manufacturing Tax Credit |
| RTP |
Regional Tax Payment |
| RRSP |
Registered Retirement Savings Plan (Canada) |
| REC |
Renewable Energy Credit |
| RRC |
Renewable Resource Credit |
| RWC |
Renewable Wealth Credit |
| RDT |
Research Development Tax |
| RTC |
Research Tax Credit |
| R&D |
Research and Development (tax credits) |
| RWT |
Resident Withholding Tax |
| RATC |
Residential Area Tax Credit |
| RIT |
Residential Investment Tax |
| RML |
Residential Mortgage Loan (tax-related) |
| RNTC |
Residential Nonprofit Tax Credit |
| RPS |
Residential Property Scheme (tax-related) |
| RRC |
Residential Repair Credit (tax-related) |
| RSPC |
Residential Sales Property Credit |
| RCA |
Retirement Compensation Arrangement (tax-related) |
| RICL |
Retirement Income Credit Liability |
| RIC |
Retirement Income Credit |
| REIT |
Real Estate Investment Trust (taxable income) |
| RMD |
Required Minimum Distribution (taxable) |
| RSP |
Retirement Savings Plan |