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Last reviewed: Next review due: Reflects current conservatorship bond calculator requirements
2026 Requirements Verified
Implements Cal. Prob. Code § 2320 exactly

Conservatorship Bond Calculator

A conservatorship bond amount equals the estate’s personal property value, plus one year of expected income, plus annual public benefits the conservatee receives, plus a court-mandated recovery-cost buffer that runs 10-12% depending on estate size — and it doubles if you post the bond through personal sureties instead of a licensed surety company. Enter your three numbers below and the calculator runs all four steps for you.

Conservatorship Bond Penal-Sum Calculator

Enter the estate’s numbers below — the calculator applies the same formula a probate court uses.

Applies the exact statutory formula: personal property + annual income + public benefits + the Rule 7.207 recovery-cost tiers, doubled if you use a personal surety.

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Cash, securities, and personal property the conservator can spend or liquidate. Real property the conservator can’t independently sell is usually excluded.

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Rent, dividends, interest, and other income the estate is expected to collect over one year.

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Benefits paid to the protected person that the conservator receives and manages — often overlooked, but courts count it as estate income.

Surety type

Under § 2320(d), a bond backed by individual (non-admitted) sureties instead of a licensed surety company must be double the admitted-insurer amount.

Estimated Bond Amount

Personal property$325,000
+ Annual income$15,000
+ Public benefits$9,600
= Subtotal$349,600
+ Recovery-cost buffer (Rule 7.207)$34,960
Bond amount (penal sum)
$384,560
Estimated annual premium
$1,923$11,537
0.5% (excellent credit) to 3% (rebuilding credit) of the bond amount

Already have Letters of Conservatorship with a court-set bond amount? Skip the estimate.

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The Four-Part Formula Behind This Calculator

California codifies more of this math than any other state, which is why it’s the model this calculator is built on.

Official California Requirements

"The amount of the bond given by an admitted surety insurer shall be the sum of the value of the personal property of the estate, the probable annual gross income of all of the property of the estate, the probable annual gross payments described in paragraph (3), and a reasonable amount for the cost of recovery to collect on the bond, including attorney's fees and costs. If the bond is given by personal sureties, the amount of the bond shall be twice the amount required for a bond given by an admitted surety insurer."
California Probate CodeCal. Prob. Code § 2320(c)-(d)

Real property is usually excluded

Houses and land the conservator can’t sell without a separate court order typically don’t count toward the personal-property figure — only assets the conservator can actually spend or liquidate feed into this calculator.

The doubling rule is easy to miss

Section 2320(d) doubles the entire bond — subtotal plus recovery buffer — for personal sureties. A $782,960 admitted-insurer bond becomes $1,565,920 with personal sureties. Toggle it in the calculator to see the gap.

Not Every State Codifies a Formula Like This

California is unusually specific. Most states leave the bond amount to the judge’s discretion within a much looser assets-plus-income framework.

California — codified formula

Cal. Prob. Code § 2320(c) spells out exactly what gets summed, and rule 7.207(b) spells out exactly what percentage gets added for recovery costs. There’s very little left to a judge’s discretion on the base number itself.

Nevada — pure judicial discretion

NRS 159.065 requires every guardian to file a bond “in such amount as the court determines is necessary for the protection of the ward and the estate of the ward” — no formula, no percentages, no statutory floor tied to assets or income at all.

For the full 51-jurisdiction breakdown of which states use a fixed multiplier, a discretionary figure, or no bond by default, see the probate bond cost by state guide.

What the Premium Costs Once the Bond Amount Is Set

The penal sum from the calculator above is fixed by the formula — the premium rate applied to it depends on the conservator’s personal credit. Here’s the range on a representative $500,000 bond.

Calculator Questions

Why does the calculator ask about public benefits separately from income?

Because Cal. Prob. Code § 2320(c) lists them as a separate line item, not a subset of "income." The statute sums the value of the personal property, the probable annual gross income of the property, and the probable annual gross payments the conservatee receives from Social Security, VA benefits, or other public assistance — three distinct figures, added together. A conservatee living entirely on SSI or a VA pension with no investment income still needs a bond sized to those payments, which is easy to miss if you only think of "income" as dividends and rent.

What is the Rule 7.207 recovery-cost buffer, and why isn't it a flat percentage?

Section 2320(c)(4), added effective January 1, 2008, requires 'a reasonable amount for the cost of recovery to collect on the bond, including attorney's fees and costs' — but the statute doesn't set the number. California Rules of Court, rule 7.207(b) fills in the formula: 10% of the combined estate value up to $500,000, 12% of the amount between $500,000 and $1,000,000, and 2% of anything above $1,000,000. It's tiered rather than flat because the Judicial Council reasoned that recovery costs don't scale linearly — collecting on a $2 million bond doesn't cost four times what collecting on a $500,000 bond costs.

Does choosing personal sureties actually save money once the doubling rule applies?

Almost never. Section 2320(d) doubles the entire bond amount — subtotal plus recovery-cost buffer — if you post through personal (individual, non-admitted) sureties instead of a licensed surety company. Doubling the penal sum usually erases any premium savings from skipping a corporate carrier, and personal sureties still have to qualify with the court and re-qualify if their financial position changes. Almost every conservatorship bond BSB issues uses an admitted surety insurer for this reason — run both toggles in the calculator above and compare the two bond amounts side by side.

My state isn't California — how accurate is the 'other state' estimate?

It gives you the base mechanism most states share (assets plus expected annual income) but without California's two codified add-ons: the Rule 7.207 recovery-cost tiers and the § 2320(d) personal-surety doubling rule. Nevada is a useful contrast — NRS 159.065 just says the guardian must file a bond 'in such amount as the court determines is necessary for the protection of the estate,' full stop, no formula at all. Treat the 'other state' output as a floor a judge could exceed, not a number you can file with the court.

Will the court accept this number, or can the judge order more?

The § 2320(c) formula is what an admitted surety insurer's bond amount 'shall be' under the statute, but courts retain discretion to adjust it — most often upward, if the estate includes real property the conservator has authority to sell (added on top of the personal-property figure) or if the accounting reveals assets grew since the last bond review. Use this calculator to walk into the hearing with the number a producer will quote from; the judge's order on the Letters of Conservatorship is still the figure that controls.

How is this different from the general probate bond estimator?

The site's broader probate bond cost estimator applies a single state multiplier (1.0x-2.0x) to assets-plus-income across all 51 jurisdictions and all five fiduciary roles. This calculator does one thing the multiplier model can't: it reproduces conservatorship's actual three-part California statute — personal property, income, and public benefits summed separately, then the Rule 7.207 tiered recovery-cost add-on, then the § 2320(d) doubling rule for personal sureties. If you need a fast multi-state ballpark, use the estimator; if you're in a California conservatorship and want the filed-formula number, use this one.

Have Your Number? Get It Underwritten Before the Hearing.

Submit the estimate above and a producer pre-qualifies your credit now, so the bond is ready to issue the same day the court sets the final penal sum on your Letters of Conservatorship.

Court-accepted forms, all 50 states
Treasury-certified sureties
Same-day filing on court-set amounts
Eric Drummond, Licensed Surety Producer
Reviewed by
Eric Drummond, Licensed Surety Producer

All content is researched from official state and federal sources (.gov) and verified before publication. BuySuretyBonds.com works with Treasury-certified, A-minimum rated surety carriers serving all 50 states.