Calculator Inputs
Formula Used
Projection years = Retirement age − Current age.
Salary in year y = Current salary × (1 + Salary growth)y - 1.
Pay credit = Salary × Pay credit rate + Fixed annual credit.
If a custom cap is entered, the calculator uses the lower value.
Interest credit = Opening balance × Interest credit rate.
Ending balance = Opening balance + Interest credit + Pay credit.
Vested balance = Projected balance × Vesting percentage.
Inflation adjusted value = Vested balance ÷ (1 + Inflation rate)years.
Monthly annuity = Vested balance ÷ 1,000 × Annuity factor.
Installment payment = P × i ÷ [1 − (1 + i)-n].
How to Use This Calculator
- Enter your current age and expected retirement age.
- Add your current cash balance and annual salary.
- Enter pay credit, fixed credit, and interest assumptions.
- Use the vesting field to estimate your available balance.
- Add tax and inflation estimates for planning comparisons.
- Enter annuity and installment assumptions.
- Press the calculate button.
- Review the result, schedule, CSV, and PDF exports.
Example Data Table
| Scenario | Current Age | Retirement Age | Balance | Salary | Pay Credit | Interest |
|---|---|---|---|---|---|---|
| Base Case | 40 | 65 | $50,000 | $85,000 | 5% | 4% |
| Higher Salary Growth | 40 | 65 | $50,000 | $85,000 | 6% | 4% |
| Conservative Interest | 45 | 65 | $75,000 | $95,000 | 5% | 3% |
Understanding an MGH Cash Balance Estimate
A cash balance plan acts like a pension with an account style view. The plan may show a starting balance, yearly pay credits, and interest credits. This calculator models those moving parts. It does not replace official plan documents. It helps you test retirement timing, salary growth, vesting, taxes, and payout choices.
Why the Projection Matters
Small changes can create large differences over time. A higher pay credit raises the base each year. A higher interest credit compounds the account faster. Starting earlier also matters. More years allow more credits and more compounding. The final number is the projected cash balance at retirement age. The vested amount shows the portion assumed to be available under your selected vesting percentage.
Key Inputs to Review
Enter your current age and target retirement age first. Then add your present balance and annual salary. The pay credit rate estimates employer credits based on salary. The fixed annual credit field can model special credits or manual adjustments. The custom cap limits yearly credits when needed. The interest credit rate grows the opening balance each year. Salary growth changes future pay credits. Inflation converts the final balance into today’s buying power.
Reading the Results
The summary shows projected balance, vested balance, total pay credits, total interest, and estimated tax withholding. It also compares lump sum, single life annuity, joint survivor annuity, and installment payment estimates. These options are planning estimates only. Actual conversion rates, elections, survivor rules, and tax treatment may differ.
Using the Output Carefully
Use conservative and optimistic scenarios. Save the CSV for spreadsheet review. Save the PDF for quick sharing. Compare results with your benefit statement. Then review official plan rules before making decisions. A calculator can show direction. It cannot confirm eligibility, final benefits, legal rights, or guaranteed payments. Good planning uses estimates, records, and professional guidance together.
Advanced Planning Checks
The tool also separates gross and net values. It tracks yearly balances, salary, credits, and interest. This makes assumptions visible. You can change one field and rerun the estimate. That approach helps spot sensitive inputs before retirement choices become urgent. It supports cleaner discussions with advisors, spouses, and payroll teams during each annual review cycle.
FAQs
Is this an official MGH benefit calculator?
No. This tool is for planning and education. It uses your assumptions. Always compare results with official statements, plan documents, and benefit office guidance.
What is a cash balance retirement plan?
It is a pension design that shows benefits like an account. The balance usually grows through pay credits and interest credits.
What is a pay credit?
A pay credit is an amount added to the plan balance. It may be based on salary, service, age, or plan rules.
What is an interest credit?
An interest credit is growth applied to the opening balance. This calculator uses the interest rate entered by the user.
Why does vesting matter?
Vesting estimates the portion of the projected balance you may keep. A lower vesting percentage reduces the available amount.
How is the lump sum estimated?
The calculator projects the cash balance first. It then applies vesting and subtracts estimated tax withholding to show a net lump sum.
How is the monthly annuity estimated?
The monthly annuity uses a factor per $1,000 of vested balance. Actual annuity factors may differ under plan rules.
Can I export the results?
Yes. Use the CSV button for spreadsheet review. Use the PDF button for a simple planning report.