Business letters are formal written communications used between organizations, professionals, clients, customers, vendors, regulators, and stakeholders. Below is a comprehensive list of business letter writing types covering operational, commercial, HR, legal-business, compliance, and relationship purposes.
Core Business Letter Types
- Application letter
- Cover letter
- Job application letter
- Employment inquiry letter
- Business introduction letter
- Company introduction letter
- Professional introduction letter
Sales and Commercial Letters
- Sales letter
- Product introduction letter
- Service introduction letter
- Promotional letter
- Offer letter to client
- Sales follow up letter
- Cross sell letter
- Upsell letter
- Discount offer letter
- Quotation letter
- Estimate letter
- Proposal submission letter
- Tender submission letter
- Bid cover letter
Order and Transaction Letters
- Purchase order letter
- Order confirmation letter
- Order acknowledgment letter
- Order cancellation letter
- Backorder letter
- Delivery confirmation letter
- Shipping notification letter
- Payment request letter
- Invoice cover letter
- Payment reminder letter
- Late payment letter
- Final payment notice letter
Inquiry and Request Letters
- Business inquiry letter
- Information request letter
- Price inquiry letter
- Catalog request letter
- Sample request letter
- Meeting request letter
- Appointment request letter
- Document request letter
- Clarification request letter
- Approval request letter
- Permission request letter
Response and Follow Up Letters
- Inquiry response letter
- Information response letter
- Approval letter
- Denial letter
- Clarification letter
- Follow up letter
- Status update letter
- Decision letter
- Confirmation letter
Complaint and Adjustment Letters
- Complaint letter
- Customer complaint letter
- Service complaint letter
- Product complaint letter
- Delay complaint letter
- Damage complaint letter
- Adjustment letter
- Complaint response letter
- Resolution letter
- Replacement letter
- Refund letter
- Compensation letter
Client and Relationship Letters
- Client welcome letter
- Client onboarding letter
- Account opening letter
- Account update letter
- Relationship maintenance letter
- Client appreciation letter
- Thank you letter to client
- Client retention letter
- Renewal letter
- Contract renewal letter
Vendor and Supplier Letters
- Vendor inquiry letter
- Supplier registration letter
- Vendor onboarding letter
- Vendor approval letter
- Vendor rejection letter
- Supplier evaluation letter
- Vendor performance letter
- Contractor engagement letter
- Contractor termination letter
Partnership and Collaboration Letters
- Partnership proposal letter
- Collaboration letter
- Joint venture letter
- Alliance invitation letter
- Memorandum cover letter
- Sponsorship request letter
- Sponsorship confirmation letter
HR and Employment Business Letters
- Interview invitation letter
- Interview confirmation letter
- Job offer letter
- Conditional offer letter
- Appointment letter
- Joining letter
- Employment confirmation letter
- Probation confirmation letter
- Promotion letter
- Transfer letter
- Role change letter
- Salary revision letter
- Increment letter
- Bonus letter
- Warning letter
- Disciplinary letter
- Show cause letter
- Suspension letter
- Termination letter
- Layoff letter
- Relieving letter
- Experience letter
Internal Business Letters
- Internal transfer letter
- Department instruction letter
- Internal announcement letter
- Policy communication letter
- Procedure update letter
- Management directive letter
Legal Business Letters
- Legal notice letter
- Demand letter
- Payment demand letter
- Breach notice letter
- Default notice letter
- Cure notice letter
- Cease and desist letter
- Settlement offer letter
- Dispute letter
- Contract termination letter
- Notice of non renewal letter
Compliance and Regulatory Letters
Compliance declaration letter
Regulatory submission letter
Explanation letter to authority
Non compliance response letter
Remediation commitment letter
Audit response letter
Financial Letters
- Credit request letter
- Credit approval letter
- Credit denial letter
- Collection letter
- Debt recovery letter
- Installment request letter
- Payment arrangement letter
- Financial guarantee letter
Banking and Account Letters
- Account opening request letter
- Account closing letter
- Bank authorization letter
- Signature authorization letter
- Change of signatory letter
- Address change letter
- KYC submission letter
Authorization and Delegation Letters
Authorization letter
Power of authorization letter
Delegation letter
Representation letter
Proxy authorization letter
Reference and Certification Letters
- Business reference letter
- Vendor reference letter
- Client reference letter
- Professional reference letter
- Certification letter
- Employment certification letter
Public and Stakeholder Letters
- Shareholder letter
- Investor update letter
- Stakeholder communication letter
- Public announcement letter
- Advisory letter
Crisis and Issue Letters
- Apology letter to customer
- Service failure apology letter
- Delay apology letter
- Incident explanation letter
- Corrective action letter
Closure and Exit Letters
- Account closure letter
- Service termination letter
- Subscription cancellation letter
- Engagement closure letter
- Project closure letter
