How it works

A useful distinction

Break-even depends on valuing earlier payments

Compare the same two claiming ages first at a zero discount rate and then at a positive rate. Valuing earlier receipts more highly can shift the crossover or remove it within your chosen lifespan; neither outcome predicts longevity.

Comparing benefit streams across claiming ages

A claiming-age comparison combines the assumed benefit with the age when payments begin. A larger monthly benefit can start later, so compare cumulative streams as well as individual payments. Use the birth-cohort mode to check the supported full-retirement-age assumption. The calculator models the benefit figures you enter and does not retrieve an official earnings record or guarantee an award amount.

Claiming-age scenario: formula and assumptions

Early claiming reduces benefits by 5/9% per month for the first 36 months, then 5/12%; delayed credits are modeled at 8% per year.

Enter the benefit from your SSA estimate. This mode does not reconstruct earnings history, spouse benefits, taxes, or the earnings test.

Full retirement age by birth cohort: formula and assumptions

FRA is 66 for 1943–1954 births, increasing by two months per year through 1959, then 67.

January 1 birthdays use the preceding year’s cohort. This model supports cohorts from 1943 onward.

Compare claim-age benefit streams: formula and assumptions

Present value = sum of each monthly benefit discounted to a common valuation date.

Compare nominal and discounted totals under the same lifespan and inflation timeline. Candidate ages are deterministic scenarios, not personalized claiming recommendations; exact SSA payment timing and other benefits require separate rules.

Worked example

Reference example currency: USD. These fixed examples do not change with your calculator preferences.

Using the Claiming-age scenario example:

Inputs

Monthly benefit at full retirement age ($): 2500
Full retirement age (years): 67
Claiming age (years): 67

Method

Early claiming reduces benefits by 5/9% per month for the first 36 months, then 5/12%; delayed credits are modeled at 8% per year.

Result

Example result

Estimated monthly benefit: $2,500.00

Percentage of full-age benefit: 100%

These are illustrative inputs. Change the values to explore a different scenario.

What to keep in mind

Uses entered FRA benefits or supplied monthly amounts, not lifetime earnings history. Supported cohorts start in 1943; delayed credits stop at age 70. Spousal/survivor benefits, the earnings test, taxes and exact SSA payment timing are excluded.

Formula references

References explain the underlying methods; they do not imply endorsement or individual professional review of Finflo.

Common questions

Where does the starting benefit come from?

Enter an FRA benefit from your SSA estimate or supply the two scenario benefits. The calculator does not reconstruct benefits from your earnings history.

What is held constant in a two-stream comparison?

Both streams use a common valuation age, lifespan, COLA and discount assumption. Candidate-age rows use the entered FRA benefit even when the two comparison amounts are supplied manually.

Does waiting beyond age 70 add delayed credits?

No. The model caps age-based delayed credits at 70; later changes in an actual benefit can have other causes.

Prepared by Finflo. See our methodology and editorial policy. Read the relevant professional-advice limitations.

Social Security Calculator

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