[Home](./index.md) > [bitburner](./bitburner.md) > [Corporation](./bitburner.corporation.md) ## Corporation interface Corporation API **Signature:** ```typescript export interface Corporation extends WarehouseAPI, OfficeAPI ``` **Extends:** [WarehouseAPI](./bitburner.warehouseapi.md), [OfficeAPI](./bitburner.officeapi.md) ## Methods | Method | Description | | --- | --- | | [acceptInvestmentOffer()](./bitburner.corporation.acceptinvestmentoffer.md) | Accept the investment offer. The value of offer is based on current corporation valuation. | | [bribe(factionName, amountCash)](./bitburner.corporation.bribe.md) | Bribe a faction. The specified faction must offer at least 1 type of work. You can use [getFactionWorkTypes](./bitburner.singularity.getfactionworktypes.md) to get the list of work types of a faction. | | [buyBackShares(amount)](./bitburner.corporation.buybackshares.md) | Buyback shares. Spend money from the player's wallet to transfer shares from public traders to the CEO. | | [createCorporation(corporationName, selfFund)](./bitburner.corporation.createcorporation.md) | Create a Corporation. | | [expandCity(divisionName, city)](./bitburner.corporation.expandcity.md) | Expand to a new city. | | [expandIndustry(industryType, divisionName)](./bitburner.corporation.expandindustry.md) | Expand to a new industry. | | [getBonusTime()](./bitburner.corporation.getbonustime.md) | Get bonus time. Bonus time is accumulated when the game is offline or if the game is inactive in the browser. Bonus time makes the corporation progress faster. | | [getConstants()](./bitburner.corporation.getconstants.md) | Get corporation-related constants. | | [getCorporation()](./bitburner.corporation.getcorporation.md) | Get corporation data. | | [getDivision(divisionName)](./bitburner.corporation.getdivision.md) | Get division data. | | [getIndustryData(industryName)](./bitburner.corporation.getindustrydata.md) | Get constant data of an industry. | | [getInvestmentOffer()](./bitburner.corporation.getinvestmentoffer.md) | Get an offer for investment based on current corporation valuation. | | [getMaterialData(materialName)](./bitburner.corporation.getmaterialdata.md) | Get constant data of a material. | | [getUnlockCost(upgradeName)](./bitburner.corporation.getunlockcost.md) | Get the cost to unlock a one-time unlockable upgrade. | | [getUpgradeLevel(upgradeName)](./bitburner.corporation.getupgradelevel.md) | Get the level of a levelable upgrade. | | [getUpgradeLevelCost(upgradeName)](./bitburner.corporation.getupgradelevelcost.md) | Get the cost to unlock the next level of a levelable upgrade. | | [goPublic(numShares)](./bitburner.corporation.gopublic.md) | Go public. | | [hasCorporation()](./bitburner.corporation.hascorporation.md) | Returns whether the player has a corporation. Does not require API access. | | [hasUnlock(upgradeName)](./bitburner.corporation.hasunlock.md) | Check if you have a one-time unlockable upgrade. | | [issueDividends(rate)](./bitburner.corporation.issuedividends.md) | Issue dividends. | | [issueNewShares(amount)](./bitburner.corporation.issuenewshares.md) | Issue new shares. | | [levelUpgrade(upgradeName)](./bitburner.corporation.levelupgrade.md) | Level up an upgrade. | | [nextUpdate()](./bitburner.corporation.nextupdate.md) | Sleep until the next Corporation update happens. | | [purchaseUnlock(upgradeName)](./bitburner.corporation.purchaseunlock.md) | Unlock an upgrade. | | [sellDivision(divisionName)](./bitburner.corporation.selldivision.md) | Sell a division. | | [sellShares(amount)](./bitburner.corporation.sellshares.md) | Sell shares. Transfer shares from the CEO to public traders to receive money in the player's wallet. |