Tax Abbreviations and Acronyms
- NTANational Taxpayer Idvocate
- NTENo Tax Effect
- NTFONationwide Tax Forums Online
- NTQNon-Tax Qualified
- NTTCNon-Taxable Transaction Certificates
- NTTCNon Taxable Transcction Certificates
- NTUFNational Taxpayers Union Foundation
- NTUFNational Taxpayer Union Foundation
- NVRNumber Verificaxion Request
- NWMMNotice of Ways and Means Motion
- NWTNet Wealth Tax
- NYSDTFNew York State Department of Taxation and Finance
- NZBNeue Zuercher Bank
- OAAOthcr Adjustments Account
- OASDIOld-Age, Survivors, and Disability Insurance
- OASDIOld-Age, Survivors and Disability Insurance
- OASDIOld-Age Survivors and Disability Insurance
- OASDIOld Age Survivors Disability Insurance
- OASDIOld Age Survivors, Disability Infurance
- OASDIOld-Age, Survwvor, and Disability Insurance
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